Help please! Function Notation
Given f(x)=8x−9
a. Find f(3y−1)=8(3y−1)−9=
b. If f(x)=−23, find the value of x.

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Identify the graph of y = ln x + 1.

The function v(r)=4/3pir^3 can be used to find the volume of air inside a basketball given its radius. what does v(r) represent