Adrian purchased 7 pair of scissors for 20.86 at one store and 2 pair of scissors for the same price at another store for $5.96. Write an equation then solve it to determine the amount he paid for a pair of scissors. What was the cost per pair of scissors?

y=2.98x

$2.98

Step-by-step explanation:

$20.86/7 = $2.98

$5.96/2 = $2.98

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.