Can someone me on the last two empty boxes : ( ? ?

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

Me asap! what is the slope of this line? enter your answer in the box.

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)