Which of the following binomials is not prime? a. 2x+1 , b. 3x+2 , c. x2-4 , d. x2+8

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?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Teams of 4 are competing in a 1/4 mile relay race. each runner must run the same exact distance. what is the distance each teammate runs?