What is the formula for lateral surface area of a triangular prism

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Which functions are even? check all of the boxes that apply. f(x) = x4 – x? f(x) = x2 – 3x + 2 f(x) = (x - 2) f(x) = x done