2(8x +9) -8(7-5x)

Please can someone help

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

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x