Question

Juan was given a gift card for a coffee shop. Each morning, Juan uses the card to buy one cup of coffee. Each cup of coffee costs $2 and the original amount of money on the gift card was $30. Write an equation for A, in terms of x, representing the amount money remaining on the card after buying of coffee.

Answer 1

`A=30-2x`

Explanation:

Cost of one cup of coffee=$2

The original amount of money on the gift card= $30

Juan's expenses in buying coffee, after
`x` morning are
`\$2* x`.

The amount of money left,
`A`, on the card
`=` (Original amount)
`-` (Total expenses)

`A=30-2x`

Hence, the equation for,
`A`, the amount of money remaining on the card is

`A=30-2x.`