A sports arena is in the shape of a rectangle. The arena has a length of (x − 3) feet and a width of (2x + 4) feet. Which of the following represents the area of the arena?

Select one:
A. x2 + 2x − 12
B. 2x2 + x − 4
C. 2x2 − 2x − 12
D. 2x2 − 2x − 7

What is the inverse of the function f(x)=4x+8

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b