To solve this question all you have to do is input the X and y coordinates and test each point in the question. To see which of those points. Have the left hand side equal to the right hand side after doing all of the operations.
X=5
Do you need an explanation or is the answer enough?
Answer:
30 seconds
Step-by-step explanation:
10x10=100 3x10=30
18 would have to be the mean because of the average
Answer:
That simplifies to 
Step-by-step explanation:
Let's simplify:

If you want to express that as a single fraction, you can do so by multiplying the five by 15/15, and summing the numerators. That gives you:
