What is the mean of the following data set?
19,4, 17, 3, 6, 5, 5, 3, 11, 12, 3, 7, 15, 8, 8, 10, 5, 3, 12, 4

Step-by-step explanation:

You have to add all the numbers equals 160.

Then divide how many numbers there are. There are 20 numbers. Then, it is the sum divided by the count.

Hope this helps. Good Luck!

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: