Question

A widget wonder produces widgets the cost of 3 widgets are 15.50 and 7 widgets is 23.50 how much would it cost for 5 widgets

Answer 1

19.50

Explanation:

We have a linear function with two known points:

(3, 15.5) and (7, 23.5)

slope = m = (23.5 - 15.5)/(7 - 3) = 2

It costs 2.00 per widget.

It costs 4.00 for 2 widgets.

3 widgets cost 15.50.

15.50 + 4.00 = 19.50

It costs 19.50 for 5 widgets.