Using positive integers between 1 and 9 and each positive integer at most once, fill in values to get two constraints so that I = 7 is the only integer that will satisfy both constraints at the same time.

Helppp!

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

The parabola opens: y=√x-4 (principal square root) up down right left

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great