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Over [174]
3 years ago
10

Lance bought a used car for $5500. He sold it two years later for $2475. What is the percent change of the price?

Mathematics
1 answer:
Rufina [12.5K]3 years ago
4 0

Answer: 55%

Step-by-step explanation:

2475/5500 = .45

He sold it for 45% of the price, so it went down by 55%

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What number would you add to the equation below to complete the square?x2 - 11x = 0?
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2x - 11 = 0
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3 years ago
Madison received a share of $4230 for a fishing competition. She deposited it in the bank and left it for 3 years accumulating s
Elis [28]

Answer:

$4785.68

Step-by-step explanation:

Original amount: <u>$</u><u>4</u><u>2</u><u>3</u><u>0</u>

Interest for 1 year: <u>4</u><u>.</u><u>2</u><u>%</u>

<em>First year;</em>

4230 + (4230 \times  \frac{4.2}{100})  \\  = 4230 + 177.66 \\  = 4407.66

<em>S</em><em>e</em><em>c</em><em>o</em><em>n</em><em>d</em><em> </em><em>y</em><em>e</em><em>a</em><em>r</em><em>;</em>

4407.66 + (4407.66 \times  \frac{4.2}{100} ) \\  = 4407.66 + 185.12172 \\  = 4592.78172

<em>T</em><em>h</em><em>i</em><em>r</em><em>d</em><em> </em><em>y</em><em>e</em><em>a</em><em>r</em><em> </em><em>(</em><em>t</em><em>o</em><em>t</em><em>a</em><em>l</em><em> </em><em>b</em><em>a</em><em>l</em><em>a</em><em>n</em><em>c</em><em>e</em><em> </em><em>a</em><em>f</em><em>t</em><em>e</em><em>r</em><em> </em><em>3</em><em> </em><em>y</em><em>e</em><em>a</em><em>r</em><em>s</em><em>)</em><em>;</em>

4592.78172 + (4592.78172 \times  \frac{4.2}{100} ) \\  = 4592.78172 + 192.89683224 \\  =4785.67855224

Round the number;

<em><u>$4785.68</u></em>

YOUR ANSWER hope this helps :))

6 0
3 years ago
Read 2 more answers
Two fraternities, Sig Ep and Ep Sig, plan to raise money jointly to benefit homeless people on Long Island. They will sell Yoda
WINSTONCH [101]

Answer:

a. Based on this information, construct a linear demand equation for Yoda vs. Alien T-shirts, and hence obtain the weekly revenue R as a function of the unit price x.

  • y = 640 - 80x ⇒ demand equation
  • xy = - 80x² + 640x ⇒ weekly revenue

b. The university administration charges the fraternities a weekly fee of $500 for use of the Student Center. Write down the monthly profit P as a function of the unit price x, and hence determine how much the fraternities should charge to obtain the largest possible weekly profit. What is the largest possible weekly profit?

  • $780

Step-by-step explanation:

first, we must determine the slope = (400 - 240) / (3 - 5) = 160 / -2 = -80

the demand equation:

y - 240 = -80 (x - 5)

y = -80x + 400 + 240

y = 640 - 80x

total weekly revenue:

xy = -80x² + 640x

xy - 500 = -80x² + 640x - 500

max. profit ⇒ x = -640 / (2 x -80) = -640 / -160 = 4

maximum weekly profit = -80($4²) + 640($4) - $500 = -$1,280 + $2,560 - $500 = $780

7 0
3 years ago
I need help for all of these questions
Sever21 [200]

Answer:

1. Graph a point on -22.

2. Graph a point on both -98 and -108.

3. Graph a point at -16.

4. Graph a point at both -4 and 2.

5. 16.

6. His had -16. He owes 16.

7. 100? (cant see this one too well)

8. -45.

Step-by-step explanation:


6 0
3 years ago
What are the vertex and axis of symmetry of the parabola y = x2 + 10x + 30?
slamgirl [31]

Answer:

x=−5

y=x2+10x+25

Step-by-step explanation:

Because the line of symmetry passes through the vertex, the equation of the line is x=−5.

6 0
2 years ago
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