X/11 = -12

please help!!!

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

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Given that abcd is a rhombus, what is the value of x?