Simplify using appropriate property: 5/7 X 1/5 + 5/7 X 3/5

Identify which functions are linear or non-linear. a. f(x) = x2 + 1 b. f(x) = 2x + 5 c. f(x) = x 2 + 3 d. f(x) = 3 x + 7 e. f(x) = 4x + 10 2 - 5

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.

3x + 4y = 5 x- 3y = -7 solve by substitution