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Home > CCA2 > Chapter 6 > Lesson 6.2.4 > Problem 6-142

6-142.

function machineKirsta was working with the function machine shown at right, but when she turned her back, her little brother Caleb dropped in a number. She didn't see what he dropped in, but she did see what fell out: 9. What operations must she perform on 9 to undo what her machine did? Use this to find out what Caleb dropped in. Homework Help ✎

In this situation, is the output. Write and solve the equation.

What do you do to both sides of the equation to 'undo' the square root?