After opening the parachute, the descent of a parachutist follows a linear model. At 3:31 P.M., the height of the parachutist is 2800 feet. At 3:32 P.M., the height is 1600 feet. Use a linear equation that gives the height of the parachutist in terms of the time to find the time when the parachutist will reach the ground.
A)3:33:40 P.M.
B)3:33:20 P.M.
C)3:32:10 P.M.
D)3:34:00 P.M.
E)3:33:50 P.M.

Question

Quizplus · Accepted Answer

The parachutist descends 1200 feet in 1 minute, so the rate is 1200 feet per minute. Starting from 1600 feet at 3:32 P.M., it takes 1 minute and 20 seconds to descend to 0 feet, reaching the ground at 3:33:20 P.M.

After Opening the Parachute, the Descent of a Parachutist Follows