Question

a student spends the same amount each week for bus fare. In 5 weeks, he spends $115. Write an equation for his relationship. Let x = number of weeks

Answer 1

f(x) = ($23/week)(x)

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