A parachutist descends 20 feet in 2 seconds. Express the rate of the parachutist's change in height as a unit rate.

the answer would be 10 feet in one second

Step-by-step explanation:

you find the unit rate by dividing both of the numbers in half, but that is only this case. if it was 30 feet in 5 seconds you would divide them, so 30/5 equals 6, so that answer would be 6 feet a second. another example for this problem would be 20/2 which would be 10, so 10 feet in one second

well 20/2 = 10 so 10 is the answer