If the Cost price of the an article is greater than the selling price, we have a ?

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?

Which expressions are equivalent to -6 + 3m

What is the distance between the points 4,10 and -3,-14 on the coordinate plane