What two numbers add up to 1 but multiply to -30

Do i get charged for my membership before or after the 6 months

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 math sentence can be used to determine if the triangle is a right triangle?