In a recent 10-year period, the change in the number of visitors to U. S. national parks was about -11,150,000 visitors. a. What was the mean yearly change in the number of visitors?
The mean yearly change in the number of visitors was
visitors.

b. During the seventh year, the change in the number of visitors was about 10,800,000.
Explain how the change for the 10-year period can
be negative (brainliest)