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 On the first of each month, the $40 monthly fee for guitar lessons is withdrawn from the account.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
