The left part of the graph is parabolic as it looks curvy and we know this for sure as all of the f(x) or y = x^2 is the same for the top part of each answer choice when x<1.  
We need to analyze the linear part of the function.   Below please find the line extended.
Since the equation of a line is y = mx + b where m is slope and b is y-intercept, we can find b by looking at the line below.  
It crosses the y-axis at 1/2 so look at the answer choices and find the equation with a b of 1/2.
That’s it!! 2 points :)

At x = -2, both y values are 8 and at x = 1 both y values are -2.
This can also be seen on the graph…That’s it — 4 points!!

Let’s go one-by-one through the answer choices:

(1) Median is the middle number
Since there are 4 data points, we take the average of the middle two.
For Company 1, the average of 32,000 and 35,000 is not greater than 37,000 and for company 2, the average of 35,500 and 37,000 is also not greater than 37000.

(2) The mean salary: add them up and divide by 4…the 4 numbers for Company 1 are 30, 32, 35 and 38 while the 4 for Company 2 are 29, 35.5, 37 and 65…that 65 is going to make the mean salary of Company 2 greater than Company 1

(3) Range = High – Low
Company 2 Range = 65,000 – 29,000
Company 1 Range = 38,000 – 30,000
The salary range in company 2 is greater than the salary range of company 1

(4) Mean Age company 1 = (25 + 27 + 28 + 33)/4 = 113/4
Mean age  company 2 = (25 + 28 + 29 + 31)/4 = 113/4
The  mean age is the same at both companies

2 points :)

We will try n = 3 and n = 5 in each equation to see if the 3rd term is 10 and the 5th term is 26.

Using each answer with n=3 and looking for an answer of 10:
(1) 8n + 10,  substitute n = 3, 8(3) + 10 = 34 not 10!
(2) 8n – 14, substitute n=3, 8(3) – 14 = 10 keep this one
(3) 16n + 10, substitute n=3, 16(3) + 10 = 58 not 10!
(4) 16n – 38, substitute n=3, 16(3) – 38 = 10 keep this one

Now we have narrowed it down to either answer (2) or (4)
The fifth term is 26 so when n = 5, the answer should be 26
(2) 8n – 14 substitute n = 5, 8(5) -14 = 26!!!!
(4) 16n – 38, substitute n=5, 16(5) – 38 = 42 (not 26!)

That’s it for 2 more points!!  :)