The level surfaces of the three functions f(x, y, z) listed below are either ellipsoids, paraboloids, hyperbolic paraboloids, planes, generalized cylinders, or cones. Match the non-trivial level surfaces of the functions with these names.

(a) f(x, y, z) = 2x − 3y + 5z
(b) f(x, y, z) = 4x2 + y2 − z
(c) f(x, y, z) = sqrt(x2+y2) - 5z

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?