Question

Greg washes cars on saturday at his dad car dealership. His dad pays him $50 plus $5 for each car that he washes. Greg washes 11 cars last Saturday. use function notation to write an equation that gives the total amount Greg earns as a function of the number of cars he washes. use the equation to find how much he earn last Saturday.

Answer 1

Answer:

$f(x)=5x+50$

$f(11)=105$

Step-by-step explanation:

Let x represent number of cars Greg washes and f(x) represent Greg's total income.

We have been that Greg's dad pays him $50 plus $5 for each car that he washes.

The earnings for washing x cars would be $5x$.

The total earnings for washing x cars would be $5x+50$.

Therefore, the function $f(x)=5x+50$ represents Greg's total income as a function of the number of cars he washes.

To find the Greg's total income from washing 11 cars, we will substitute $x=11$ in our function.

$f(x)=5x+50$

$f(11)=5(11)+50$

$f(11)=55+50$

$f(11)=105$

Therefore, Greg earned $105 last Saturday.