What is the value of the expression below? 3⁴ + 9

A 21

B 39

C 43

D 90

Which number line represents the solution set for the inequality -1/2x> 24?

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers