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2 votes
2 votes
Quick algebra 1 question for 50 points!

Only answer if you know the answer, quick shout-out to Dinofish32, tysm for the help!

Quick algebra 1 question for 50 points! Only answer if you know the answer, quick-example-1
User Tresf
by
2.4k points

2 Answers

23 votes
23 votes

Answer:

m=15

Explanation:

Oh, I think I answered this question recently, but it's m=15c

The explanation for the question was written in my other response.

User RubioRic
by
3.3k points
10 votes
10 votes

Answer:

d. m = 15c

Explanation:

Directly proportional means as one amount increases, another amount increases at the same rate.

Proportionality can be used to set up an equation.

Given variables:

  • m = amount of money earned (in dollars)
  • c = number of cars washed

If m is directly proportional to c then:
m \propto c

Convert this to an equation by using a constant of proportionality, k:


\implies m=kc

We are told that Paul washed 8 cars and earned $120.

Substitute these values into the found equation and solve for k:


\implies 120=8k


\implies k=(120)/(8)


\implies k=15

Finally, substitute the found constant of proportionality (k) into the equation:


\implies m=15c

User Udi Mazor
by
2.7k points