Please help me the question is uploaded in a photo

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?

What is the point-slope equation of a line with slope -5 that contains the point (6,3)

When you answer this can you explain