How many combinations of four books can be made from eight different books?

2 times a number plus 3 equals one half a number plus 12

Find the volume of a room 15 feet by 16 feet with an 9-foot ceiling.

Gerard bought 9 hamburgers and 3 orders of fries for 24.75. chris bought 6 hamburgers and 4 fries for 19.50. Each hamburger costs the same amount. Each order of fries costs the same amount.

If an arithmetic sequence has the rule an = 3n + 5, then a4 =. The answer is 17

In a given rectangle, the shorter side is 3 units less than the longer side. If we let the longer side be represented by the variable x, create an expression that represents the perimeter of the rectangle. (P=2L+2W)

Find the range of f (x) = - x^2 - 8x - 4. (Enter your answer using interval notation.)

The top surface of a desk has a length of 5.6 ft and the length is 4 times its width what is the width of the desk

The volume of a fish tank is 20 cubic feet. If the density is 0.2 (fish over feet cubed), how many fish are in the tank? 2 4 50 100

You use 43 muscles to frown. When you smile, you use 32% of these same muscles. About how many do you use when you use

Is 1.0227 repeated a rational number