Help will give b if correct

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships