Question

Linda had a previous balance of $1,000 and made an on-time credit card payment of $800. She has a credit line of x dollars and made purchases totaling y dollars. Write an algebraic expression that represents her current available credit.

Answer 1

`x-200+y`

Explanation:

We can determine the algebraic expression that represents her current available credit by first finding her new balance using the formula:

Previous balance - Payments + Total Purchases = New balance

where, previous balance = $1000; payments = $800; total Purchases = y

New balance =
`1000-800+y`

Next, to find her Credit balance or current available; we use the formula; Credit line - New balance

where credit balance = x; new balance =
`1000-800+y`

Current available credit =
`x-200+y`