What is the volume of the pyramid in the diagram?
a) 25 cm3
b) 75 cm3
c) 105 cm3
d) 135 cm3
e) 225 cm3

What’s the domain of this function? fastttt

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'