**Answer:**

31

**Step-by-step explanation:**

although we cannot see the whole graph, I assume it would be 31 because

2010-1979 is 31

and the x values are years after 1979

35 I had this for a test the answer is

**Answer:**

Part A: **31000 + 3000x = 38000 + 2000x; **Part B: 7 years.

**Step-by-step explanation:**

**x = number of years since start**

For Company A, we have that salaryA(x) = 31000+3000x,

For Company Part B: salaryB(x) = 38000+2000x

**We want x such that salaryA(x) = salaryB(x).**

**Thus,**

**31000 + 3000x = 38000 + 2000x (Answer to part A)**

Subtracting 31000 from both sides of the equation implies that:

3000x = 7000 + 2000x.

Subtracting 2000x from both sides implies that:

1000x = 7000.

Then, dividing both sides of the equation by 1000 yields:

x = 7 years (Answer to part B)

**Answer:**

x-5 it's x-5 because if you do all the other ones the X-1x has multiplcation and the middle one also does but this one doesn't it just has the meaning of x subtracting the x and the 5 so the answer would be a negative if it's a low number subtracting by five or if the x is a big number well it would be possible.