Question

matthew was given a gift card for a coffee shop. each morning, matthew uses the card to buy one cup of coffee. each cup of coffee costs $4 and after buying 3 cups of coffee, the card had a $8 remaining balance. write an equation for a, in terms of x, representing the amount money remaining on the card after buying x cups of coffee.
answer
a =

Explanation:

Step1: Calculate total spent on 3 coffees

$\text{Total spent} = 3 \times 4 = 12$

Step2: Find initial card balance

$\text{Initial balance} = 12 + 8 = 20$

Step3: Define remaining amount formula

Remaining amount $A$ equals initial balance minus total cost of $x$ coffees.
$A = 20 - 4x$

Answer:

$A = 20 - 4x$