5-48.
Kirsta was working with the function machine shown at right, but when she turned her back, her little brother Caleb
dropped in a number. She did not see what he dropped in, but she did see what fell out: 9. Homework Help
a. What operations must she perform on 9 to undo what her machine did? Use this to determine what number
Caleb dropped in.
b. Write an equation for a machine that will undo Kirsta's machine