Question

Keyanna saved $75 this summer by babysitting. After school, she makes $10 a week babysitting.

a) Write an equation for the amount, A, of money that she will have after w weeks.
b) How much will she have after 5 weeks?
c) How many weeks until she has $255?

Answer 1

Given:
Savings : $75
Babysitting earnings : $10 a week.

a) A = $75 + $10w

b) A = $75 + $10 * 5 weeks
A = $75 + $50
A = $125

c) A = $75 + $10w
$255 = $75 + $10w
$255 - $75 = $10w
$180 = $10w
$180/$10 = w
18 = w
Keyanna needs to babysit for 18 weeks.