Need help with my math hw

What power can you write to represent the volume of the cube shown? write the power as an expression with a base and an exponent and then find the volume of the cube

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585

The amount of data left on the cell phone six gb for 81.5 gb of data is used how much data is available at the beginning of the cycle