Answer:
f(x) = ($23/week)(x)
Step-by-step explanation:
Hello!
Let's determine the unit rate. I'd suggest finding the cost per week, rather than the weeks covered by a certain amount of money.
Then:
$115
-------- = $23 per week
Then the amount spent as a function of the # of weeks would be:
f(x) = ($23/week)(x)
5 wk
