How many different answers can you get by grouping differently? add parentheses to the expression 7+3•4+2 to create new expressions with as many different values as possible.

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?

Acircular garden with radius of 8 feet is surrounded by a circular path with a width of 3 feet. what is the approximate area of the path alone? use 3.14 for π

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.