Answer:
f(h)=15(8)+30
8 Hours per week
Explanation:
$30 per week means she has a start of $30, so this will be a constant.
What we want to find is how much she needs to work to earn the remaining amount, $120.
To find that we need to divide $120/15, giving us 8.
She needs to work 8 hours per week. This gives us the function
x=15(8)+30