### Home > CCA2 > Chapter 5 > Lesson 5.1.1 > Problem 5-9

5-9.

Antonio’s function machine is shown at right. Homework Help ✎

What is

*A*(2)?If 81 came out, what was dropped in?

If 8 came out, what was dropped in? Be accurate to two decimal places.

9

Since

See part (b).

Guess and check the answer.

What is the answer close to?

Later you will learn how to solve an equation like this.