If a=9 and b=4, what is the value of 2a-b?

A. 10
B.14
C.25
D.72

The volume of a cube is 8 in to the 3rd power. how long is each side?

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

Aweekly newspaper charges $72 for each inch in length and one column width. what is the cost of an ad that runs 2 column inches long and 2 columns wide? its not 288