Question

For her birthday, Kendra received a gift card in the mail from her grandparents. The gift card was worth $50. Kendra thought, since she had just received other gifts for her birthday, she would wait a while to spend the gift card. Unfortunately, Kendra forgot all about the gift card, and the card loses $5 every month after its date of purchase if it has not been used. If the card was purchased on June 1, how much money does Kendra have left to spend when she finally remembers the card in September?

If Kendra forgot the card for three months, she lost $