If WXYZ is a square and WX= 27, find the measures. ZY= WY = RX= m

If ac = 12 and ab=7 is it possible that bc =10

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?

Icould really use some with this question.