Answer:
C.
Step-by-step explanation:
Let R represent range, in inches, of the possible rainfall in July.
We have been given that the average July rainfall in a city is 7 inches , but the actual rainfall may vary by as much as 4 inches.
We will use tolerance formula to solve our given problem.
Using absolute value rule , then , we will get:
Therefore, option C represents range, in inches, of the possible rainfall in July.