a The number that is dropped into the machine is substituted for every x in the function.
B
b Since the input is negative, the signs might change when it is substituted into the equation.
C
c Use a calculator to calculate the expression.
A
a 3
B
b 27
C
c 153.29
Practice makes perfect
a Inside Carmen's function machine we find the following equation.
(x-1)^2+2
If a number is dropped in the function machine, it replaces every x in the function and the output is the result when the expression is evaluated.
