### Home > APCALC > Chapter 1 > Lesson 1.4.4 > Problem 1-189

1-189.

Let *g*(*x*) = (3*x* – 1)^{2}. Homework Help ✎

What is

*g*(–5)?*g*(−5) = 256Write an expression for

*g*(*a*+ 1) and simplify.Substitute (

*a*+ 1) for*x*. Simplify.If

*g*(*x*) = 49, what are the possible values of*x*?Set (3

*x*- 1)² equal to 49 and solve for*x*.Write an equation for

*g*^{–1}(*x*).Let

*g*(*x*) =*y*. Solve for*x*. Then switch the*x*and*y*.Remember the ±.