To find the mean, you have to add all the numbers then divide it by how many numbers there are.
In this case, you'll need to add all those numbers and divide it by 4.

The mean is 1995.
Step 2 , supposed to be 4^-15 instead of 4^-2. Always multiply the exponents together.
Answer: Chris made a mistake in step 2 -C
Answer:
20% error
Step-by-step explanation:
easy
9.4/7.8 or do 0.078x=9.4
1.20512820513
round to nearest tenth
1.2
means
20% error
Answer:
F(-3)=5(-3)^2-8
=37
Step-by-step explanation:
Get it?