In Exercises 18 and 19, use the following information. Conversion The formula to convert miles m to kilometers k is m = 1.609k.
18. Write the inverse function, which converts kilometers to miles.
19. How many kilometers is 40 miles? Round to two decimal places.

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