Right now i have $6.75 in my piggy bank. if i add $2.25 per week to the bank, and i never take out any money, then how many weeks from now will i have $45.00 in my piggy bank?

It would take you 17 weeks to reach $45.00

Step-by-step explanation:

First you multiply $2.25 with a number like 3 and add $6.75 since that what you started with. When you keep on multiplying and dont get your answer you reach 17 and then you get 38.25. Then you add your $6.75 and you get $45.00.

2.25 * 17 = 38.25

38.25 + 6.75 = $45.00

17 is your answer

Another way (but longer is):

2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 = 38.25

38.25 + 6.78 = $45.00

8 more week till you get $45.00