Can someone help me with this? Giving 25 points.

The graph shows the function f(x) = (2.5)x was horizontally translated left by a value of h to get the function g(x) = (2.5)x–h.

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.