If X = 12 inches, Y = 16 inches, and Z = 20 inches, what is the tangent of

Identify the parent function that can be used to graph the function f(x)= (1/4x)^3

Subscriptions to a popular fashion magazine have gone down by a consistent percentage each year and can be modeled by the function y = 42,000(0.96)t. what does the value 42,000 represent in the function?

Extra points! find the missing dimension! need asap