Find the difference. (9/4x+6)-(-5/4x-24)

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

You went to a restaurant and spent $53.25 on the meal. there was a 6% sales tax. what was the amount of money, not including a tip, you spent at the restaurant?

The area (in square feet) of an x-foot-wide sidewalk can be modeled by y=-0.002x^2+0.006x.what is the width of the sidewalk to the nearest foot?