### Home > CCA2 > Chapter 5 > Lesson 5.1.1 > Problem5-9

5-9.

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

1. What is A(2)?

2. If 81 came out, what was dropped in?

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

9

$3^x=81$

Since $9·9=81$ and $3·3=9$, how many threes will you multiply to make 81?

See part (b).