SAT Question c3989ef8: Linear Equations In One Variable answer and explanation with Desmos solution

Choice B is correct. It's given that Henry uses his $$60.00$ gift card to buy $3$ movies for $$7.50$ each. Therefore, Henry spends 3 \left( \ 7.50 \right), or \$$22.50, of his $$60.00$ gift card to buy $3$ movies. After buying $3$ movies with his $$60.00$ gift card, Henry has a gift card balance of $60.00 - \ 22.50, or \$$37.50. It's also given that Henry spends the rest of his gift card balance on renting movies for $$1.50$ each. Therefore, Henry can rent \frac{\ 37.50}{$ 1.50}$,or$25$, movies.