SOLUTION: 1.) A group of students washed cars to raise money. The net amount A, in dollars, raised by washing k cars is given by the function A(k)=4k-30. If the group washed 15 cars, what is

Algebra ->  Customizable Word Problem Solvers  -> Geometry -> SOLUTION: 1.) A group of students washed cars to raise money. The net amount A, in dollars, raised by washing k cars is given by the function A(k)=4k-30. If the group washed 15 cars, what is      Log On

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Question 659292: 1.) A group of students washed cars to raise money. The net amount A, in dollars, raised by washing k cars is given by the function A(k)=4k-30. If the group washed 15 cars, what is the net amount they raised?
a.) $10
b.$15
c.$20
d.$25
e.$30

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

A%28k%29=4k-30
If the group washed 15 cars,then k=15.

A%2815%29=4%2A15-30

A%2815%29=60-30

A%2815%29=30
answer: e.$30