Hi all,

i need some help, Here the question:

1. What is the average (arithmetic mean) of 8, 7, 7, 5, 3, 2, and 2?

a. 3 4/7

b. 4 5/6

c. 4 6/7

d. 5

e. 6 4/5

I think the answer is A but the correct answer is C, i dont understand, please to explain for me.

2. If F (4) = 0 and f (6) = 6, which of the following could represent f (x)?

a. 2/3x - 4

b. x + 2

c. x - 4

d. 3/2x + 6

e. 3x - 12

The correct is E. I dont understand, please help