Aparachutist's rate during a free fall reaches 90 miles per hour. what is this rate in feet per second? at this rate, how many feet will the parachutist fall during 2 seconds of freefall? in your computations, use the fact that 1 mile is equal to 5280 feet. do not round your answers.

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.

Run a linear regression to determine an equation (y=mx+b y=mx+b)