Question

a function machine accepts inputs as ordered pairs. the components of the ordered pairs are natural number and the first component is the length of a rectangle and the second component is the width. The given machine computes the perimeter (the distance around the rectangle). Find the output for
(1,8)
(8,10)
(10,3)
(5,10)
Find an input that gives an output of 16

Thanks for the help, I have no clue.

Answer 1

you know the perimeter is 2(length+width)
So,
f(1,8) = 2(1+8) = 2(9) = 18
and so on for the others.

To produce an output of 16, all you need is two numbers that add up to 8.