To find the mean (average), we first need to add up all the test scores (14 + 19 + 19 + 20 + 16 + 18 + 15 + 17 + 12 = 150). Then, we need to divide that number (150) by the number of numbers in the data set (9 in this case). So the mean of these test scores is about 16.6666666667.
For this case we have to represent the following expression algebraically:
"10 less than x is -45"
So:
10 less than x is represented as: 
Then, the complete expression is represented as:

Adding 10 to both sides of the equation:

Thus, the value of the variable is 
Answer:

Answer: 16.6% percent chance she will pull out a blue or orange marker.
Hope this helps! :)
312* 17.5= 5460.00
134*19=2546
2546+5460= $8,006.00
I believe the slope is 3/4
9-3 = 6
4 - (-4) = 8
Simplify to get 3/4