Kerry’s grandmother, Mrs. Reynoso, is helping Kerry pay for guitar lessons. She has set up a special savings account to pay for

Question

3 years ago

12

Kerry’s grandmother, Mrs. Reynoso, is helping Kerry pay for guitar lessons. She has set up a special savings account to pay for

the lessons. On the first of each month, the $40 monthly fee for guitar lessons is withdrawn from the account.
1. Grandmother Reynoso started the account with $300. Record the monthly balance in the account in the table.

Month

Balance

0

$300

1

2

3

4

Write an expression for the amount of money in Kerry’s guitar lesson account. Let x equal the number of months since Mrs. Reynoso deposited the initial $300.

Write an equation to determine when the account balance will be $100

Mathematics