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Alisiya [41]
2 years ago
5

the cost y (in dollars) for x pounds of deli meat is represented by the equation y=3.5x, graph the equation

Mathematics
1 answer:
wel2 years ago
8 0

Answer:

I don't have the graph, but I'll explain what you need to do. Plot a point with the coordinates (1,3.5), (2,7), (3,10.5), and (4,14). Now draw a straight line connecting al these pints but don't go past the origin into the negative as in this situation it is not possible. There! Now you have a graph :)

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Step-by-step explanation:

x² + 4x = 15 can be solved best using the completing the square method.

2x(x−3)=0 can be best solved using the zero product property.

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3 years ago
EMERGENCY!!! OK SO I need help on 4 questions! Lots of points for this :) Also please make sure it's correct cause this is for a
Shalnov [3]

                               <em><u>Question # 1 Solution</u></em>

<em>Answer:</em>

32≤x≤48 is the best estimate for the amount of money, x, that Erika has to pay to get to her destination. Hence, option D is correct.

<em>Step-by-step Explanation:</em>

<em>Information Fetching and Solution Steps</em>

  • Erika estimates that she is 200 to 300 miles away from her destination
  • Car travels 25 miles per gallon of gas
  • Cost of each gallon being $4.00

As Erika estimates that she is 200 to 300 miles away from her destination, and car travels 25 miles per gallon of gas. So,

  • First dividing 200 by 25 to get the number of gallons a car needed to make 200 miles

        i.e 200/25 = 8 gallons.

        As cost of each gallon being $4.00.

        So, 8 × 4 = 32$ is the amount she needed to make 200 miles.

  • Then dividing 300 by 25 to get the number of gallons a car needed to make 300 miles

        i.e 300/25 = 12 gallons.

        As cost of each gallon being $4.00.

        So, 12 × 4 = 48$ is the amount she needed to make 300 miles.

From the above calculation, we observe that 32$ and 48$ is the best estimate between 200 miles and 300 miles.

Therefore, 32≤x≤48 is the best estimate for the amount of money, x, that Erika has to pay to get to her destination. Hence, <em>option D</em> is correct.

<em><u /></em>

<em>                                    </em><u><em>Question # 2 Solution</em></u>

<em>Answer:</em>

<em>Consultant B</em> offers the <em>cheapest price</em> for a <em>five hour session.</em>

Hence, <em>B. Consultant B</em> is the correct option.

<em>Step-by-step Explanation:</em>

<em>Analyzing the offer price of Consultant A, B and C for a Five hour session:</em>

<em />

  • Consultant A chargers $160 for the first hour
  • $75 per hour after the first.

So, for five hour session, Consultant A is offering the price:

$160 + $75 + $75 + $75 + $75 = $460

<em />

  • Consultant B chargers a flat rate of $90 per hour

So, for five hour session, Consultant B is offering the price:

$90 + $90 + $90 + $90 + $90 = 450 US$

<em />

  • Consultant C chargers $140 for the first hour
  • $80 per hour after the first.

So, for five hour session, Consultant C is offering the price:

$140 + $80 + $80 + $80 + $80 = $460

<em>Comparing the price offers of Consultant A, B and C</em>

So, by comparing the price offers of Consultant A, B and C, we determine that:

  • Consultant A is offering the price $460 for five hour session.
  • Consultant B is offering the price $450 for five hour session.
  • Consultant C is offering the price $460 for five hour session.

So, from this comparison, we conclude that <em>Consultant B</em> offers the <em>cheapest price</em> for a <em>five hour session.</em>

Hence, <em>B. Consultant B</em> is the correct option.

<em>                               </em>

<em>                              Question # 3 Solution</em>

<em>Answer:</em>

<em>They spent </em><em>4 nights</em><em> at the hotel. Hence, </em><em>option B</em><em> is correct.</em><em> </em>

<em>Step-by-step Explanation:</em>

<em>To determine: </em>

how many nights did they stay at the hotel?

<em>Information Fetching and Solution Steps</em>

  • A hotel chargers $225 per night to rent a suite.
  • The hotel also charges $75 per day for full room service.
  • Jessica and Ashely purchased full room service for every night.
  • They stayed at the hotel and spent a total of $1,200

As the total amount they spent = $1,200

As $75 is the service charges as Jessica and Ashely purchased full room service for every night.

Per night charges = hotel chargers + service charges

Per night charges = $225 + $75 ⇒ $300

So, total nights will be calculated as:

Total nights = total amount they spent ÷ Per night charges

Total nights = $1,200 ÷ $300 ⇒ 4 nights

<em>Therefore, they spent </em><em>4 nights</em><em> at the hotel. Hence, </em><em>option B</em><em> is correct.</em><em> </em>

<em />

<em>                                  Question # 4 Solution</em>

<em>Answer:</em>

Hence, |h − 57.5| ≤ 7.5 is the absolute values which best represents this restriction, where ( h ) represents height. Hence, <em>option A</em><em> is correct.</em><em> </em>

<em>Information Fetching and Solution Steps</em>

  • A certain ride at an amusement park requires that children be at least 50 inches tall but no more that 65 inches tall.

Let us take the equation of following absolute value:

|h − 57.5| ≤ 7.5

We know h − 57.5 ≤ and h − 57.5 ≥ −50

h − 57.5 ≤ 7.5         (Condition 1)

h − 57.5 + 57.5 ≤ 7.5 + 57.5      (Add 57.5 to both sides)

h ≤ 65

h − 57.5 ≥ −7.5         (Condition 2)

h − 57.5 + 57.5 ≥ −7.5 + 57.5     (Add 57.5 to both sides)

h ≥ 50

So, h ≤ 65 and h ≥ 50

Solution Graph is also attached as shown in attached figure a.

Hence, |h − 57.5| ≤ 7.5 is the absolute values which best represents this restriction, where ( h ) represents height. Hence, <em>option A</em><em> is correct.</em>

<em>Using same methodology we observe that all other options B, C, and D brings </em><em>wrong values </em><em>which is as follows:</em>

  • <em>|h+7.5|≤65 brings h≤57.5 and h≥−72.5</em>
  • <em>|h+50|≤65 brings h≤15 and h≥−115</em>
  • <em>|h+65|≤50 brings h≤−15 and h≥−115</em>

Hence, from all discussion, we conclude that |h − 57.5| ≤ 7.5 is the absolute values which best represents this restriction, where ( h ) represents height, as it brings h ≤ 65 and h ≥ 50. Hence, <em>option A</em><em> is correct.</em>

Keywords: inequality, graph solution, absolute value

Learn more about inequality from brainly.com/question/11315582

Learn more about absolute value from brainly.com/question/2155076

#learnwithBrainly

4 0
3 years ago
Help me please I been trying to figure out how to do this problem
Marina86 [1]

sin 30 = x/4

sin 30 = 0.5

0.5 = x/4

x = 2

5 0
1 year ago
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