Freddy spent $56.07 on four pairs of jeans at the store. his cost included $4.15 sales tax.

how much did each pair of jeans cost?

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.

i dont know

step-by-step explanation: