### Home > CCA2 > Chapter 1 > Lesson 1.1.2 > Problem 1-14

1-14.

Terri’s project for the Math Fair was a magnificent black box that she called a function machine. If you put 3 into her machine, the output would be 8. If you put in 10, the output would be 29; and if you put in 20, it would be 59. Homework Help ✎

What would her machine do to the input 5? What about −1? What about

*x*? Making an input → output table may help.Look for a pattern.

Try making a table and graphing the points.

If the input is

*x*, what is the output?Write an equation for Terri’s machine.