Answer:
7
Step-by-step explanation:
The mean is the average, so add all the numbers and divide by 7 (7 terms).
-14 is the sum, divided by 7 = -2
The mean is -2.
So the function we're dealing with is
f(x) =

Factorising we get,

Therefore, the vertical asymptotes are at x = 3 and x = 6