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KengaRu [80]
3 years ago
12

Max and Sharifa are both saving to buy the same model of DVD player, which costs $99, including tax. Max already has $31.00 and

decides to save $8.50 per week from now on. Sharifa already has $25.50 and decides to save $10.50 per week from now on. Who can pay for the DVD player first? Explain.
(NEED TO SHOW WORK)
Mathematics
1 answer:
gogolik [260]3 years ago
7 0

Answer:

Sharifa can pay for the DVD player first.

Step-by-step explanation:

<u>Max:</u>

99 - 31 = $68 remaining

68 / 8.5 = <em>8 weeks</em>

<u>Sharifa:</u>

99 - 25.5 = $73.50 remaining

73.5 / 10.5 = <em>7 weeks</em>

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Maria scored 72, 97, and 82 on her first three math tests. She wants to have a mean score of 82 for the quarter. How many points
Rom4ik [11]

Answer:

<em>She needs </em><em>77 </em><em>on her last test to earn an 82 for the quarter.</em>

Step-by-step explanation:

Maria scored 72, 97, and 82 on her first three math tests.

She wants to have a mean score of 82 for the quarter.

Let us assume that she must score x on her last test to earn an 82 for the quarter.

So the average score will be,

=\dfrac{72+97+82+x}{4}

But the average score is given as 82, so

\Rightarrow \dfrac{72+97+82+x}{4}=82

\Rightarrow 72+97+82+x=82\times 4

\Rightarrow 72+97+82+x=328

\Rightarrow x=328-72-97-82

\Rightarrow x=77

3 0
3 years ago
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What is f(–3) for the function f(a) = –2a2 – 5a + 4?
shepuryov [24]
F(-3) = -2(-3)2 - 5(-3) +4
            - 6 x 2 -15 + 4
                - 12 -15 +4
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                           -23

I believe this is how to solve the equation. I could be wrong.

4 0
3 years ago
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Hunter is splitting a quart of ice cream with 7 members of his family. If the quarts is split evenly, how many cups will each fa
klemol [59]
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7 0
3 years ago
Determine what type of model best fits the given situation: Farmer Joe has 1,000 bushels of corn to sell. Presently the market p
3241004551 [841]

Answer:

C. Quadratic model

Step-by-step explanation:

Determine what type of model best fits the given situation: Farmer Joe has 1,000 bushels of corn to sell. Presently the market price for corn is $5.00 a bushel. He expects the market price to increase by $0.15 per week. For each week he waits to sell, he loses ten bushels due to spoilage. A. none of these B. exponential C. quadratic D. linear

Given:

The quantity of corn Farmer Joe has to sell = 1,000 bushels

The present market price for corn = $5.00 a bushel

The amount by which he expects the market price to rise per week =$0.15

The number of bushels lost to spoilage per week = 10

The price of the corn per bushel with time = 5 + 0.15×t

The amount of corn left with time= 1000 - 10×t

Where;

t = Time in minutes

Value of the corn = Amount of corn left × Price of corn

Value of the corn = (1000 - 10×t) × (5 + 0.15×t)

=(1000-10t) × (5+0.15t)

=5,000 + 150t - 50t - 1.5t²

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1) (14 - 8)* 8 + 5<br> What is this
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Answer:

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Step-by-step explanation:

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