The cost for laminating varies directly with the number of pages laminated. A customer had 19 pages laminated and paid $16.15.

How much will the customer pay to have 31 pages laminated?

$

Respuesta :

Y=kx --- $16.15=K❎19 --- 16.15/19 =.85 --- the cost per page is 85 cents. .85x31 =$26.35 :)