Which is another way to write this number? (3 x 1,000) + (3 x 10) (3 x 1/100) + (3 x 1/1000)

Show algebraically that f and g are inverse functions f(x)=x^2/-6; g(x)=square root of 2x+12

Question and answers are in the attached picture. you so much in advance.

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.