**Answer:**

x=6

**Step-by-step explanation:**

Mean is another word for average. It is found by adding up all of the values, and dividing that number by the amount of values you added together.

You have 5 values that get a mean or, average, of 7.4

1) We can write this as the following:

(11+12+5+3+x)/5=7.4

2) To solve, multiply both sides by 5:

11+12+5+3+x=37

3) Now combine all of the numbers on the left:

31+x=37

4) Now subtract 31 from both sides:

**x=6**

**Answer:**

A.slope = 6, y-intercept = -1/3

**Step-by-step explanation:**

I’ll say about 45 because one year hurt but my bones hurt one time and they did not like it

**Answer:**

I think it is

**Step-by-step explanation:**

4,8,5,15,6,12,7,6

8,5,15,6,12,7

5,15,6,12

15,6

15+6=21

First you divide one by seven then multiply it by three which gives you .428 but you are rounding so the answer is .43