Answer:
14 weeks
Step-by-step explanation:
t = 25 + 8.25w
Len needs 135.75
135.75 = 25 + 8.25w
Subtract 25 from each side
135.75-25 = 25-25 + 8.25w
110.75 = 8.25w
Divide each side by 8.25
110.75/8.25 = 8.25w/8.25
13.42424 = w
Since we need at least 135.75, it will take Len a little more than 13 weeks, so it will take Len 14 weeks to have enough money
