The cost of sending an overnight package from kansas city to mami is $23.50 for a package weighing up to but not including 1 pound, and $3.80 for

actually what is a question i don't understand

step-by-step explanation:

rectangles are made up of 4 right angles, which means that a side and a base meet perpendicular to one another.   their slopes then have to reflect perpendicular slopes.   perpendicular slopes are opposite reciprocals of one another.   for example, if the slope of one line is +2/3, then the perpendicular slope to that would be -3/2.   so we look for that combination in our choices.

all of them satisfy that condition (so what's the question, i guess? )

any of them that add up to 180 degrees.