Question

zach has a credit card with a $500 limit. he has used the card to pay $320.34 for groceries. how much more can zach spend without going over his limit?

Explanation:

Step1: Identify available - credit formula

The amount Zach can still spend is the credit - card limit minus the amount already spent.

Step2: Substitute values

Let $L = 500$ be the credit - card limit and $S=320.34$ be the amount already spent. The amount $A$ he can still spend is $A = L - S$.
$A=500 - 320.34$

Step3: Calculate result

$A = 179.66$

Answer:

$179.66$