8.

9.
The sum of two sides must be greater than the third side.
It can't be 5 because

.
It can't be 7 because

.
It can't be 17 because

.
So it's 12.
10.
a. Turk, McAllister
b. Market, Mission, Howard
c. not sure about this one
Y=ax+b
a... slope
b... interception on the line y
you get the equation y=-1/2 *x + 12
Answer: B. f(x) = log (x+1)
Step-by-step explanation:
Answer:
x is less than oe equal to 12