When we're finding the mean we add all the numbers then we DIVIDE THE AMOUNT OF NUMBERS. In this case, we have to divide by 5 because that's the amount of numbers there are.
Answer:
f4-g3
Step-by-step explanation:
Answer:
9
Step-by-step explanation:
81 gallons per 9 minutes
This can be thought of as a fraction:

divide the top and bottom of the fraction by 9 to make the bottom 1

remove the gallons per minute to a separate fraction
9 
Answer: x=5
Step-by-step explanation:
5 x 5 = 25 - 7 = 18
so x=5