Is this correct?
Sandra has a $20 I-Tunes giftcard and spends $3 each month. Write an equation to determine the amount of money Sandra has left on her card after x months.
y = -3x + 20
Sandra has a $20 I-Tunes giftcard and spends $3 each month. Write an equation to determine the amount of money Sandra has left on her card after x months.
y = -3x + 20