Determine whether quantities vary directly or inversely and find the constant of variation. it took peter 3 hours to drive to his friend in connecticut when he was driving with the average speed 54 mph. how much time will the way back take if he drives with the average speed 60 mph?

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old