Question

Melissa received a $45.00 gift card for a photo center, She used it to buy prints that cost 5 cents each. The remaining balance, B (in dollars), on the card after

buying x prints is given by the following.
B=45.00 -0.05x
What is the remaining balance on the card if Melissa bought 30 prints?

Answer 1

B=45.00-0.05*30
=45.00-1.5
=43.5 dollars