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kkurt [141]
3 years ago
8

You and your friend each start a car-washing service. You spend $25 $ 25 on supplies and charge $10 $ 10 per car. Your friend sp

ends $55 $ 55 on supplies and charges $13 $ 13 per car. How many cars do you have to wash to earn the same amount of money as your friend?
Mathematics
2 answers:
atroni [7]3 years ago
7 0

Answer:

If this is from TTM the answer is 10 cars.

Step-by-step explanation:

photoshop1234 [79]3 years ago
5 0

Answer:

if you wash 13 cars, you will earn 13*10= 130 $

your friend will also learn 130 $ but he only need to wash 130/13= 10 cars

SO the number of the car you have to wash is 13 cars

Step-by-step explanation:


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2 years ago
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Given g(x)=5x+4, solve for x when g(x)=9
Alex

Answer:

The value of <em>x</em> is equal to 1, written as <em>x</em> = 1.

General Formulas and Concepts:
<u>Algebra I</u>

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

Terms/Coefficients

Functions

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Step-by-step explanation:

<u>Step 1: Define</u>

g(x) = 5x + 4

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<u>Step 2: Solve for </u><u><em>x</em></u>

  1. Substitute in function value:                                                                           9 = 5x + 4
  2. [Subtraction Property of Equality] Subtract 4 on both sides:                       5 = 5x
  3. [Division Property of Equality] Divide 5 on both sides:                                1 = x
  4. Rewrite:                                                                                                            x = 1

∴ when the function g(x) equals 9, the value of <em>x</em> that makes the function true would be <em>x</em> = 1.

---

Topic: Algebra I

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