Solve the Problem. -Since Life Expectancy Has Increased in the Last Century, the Last

Multiple Choice

Solve the problem.
-Since life expectancy has increased in the last century, the number of Alzheimer's patients has increased dramatically. The number of patients in the United States reached 4 million in 2000. Using data collected since
2000, it has been found that the data can be modeled by the exponential function x, where
X is the years since 2000. Estimate the Alzheimer's patients in 2025. Round to the nearest tenth.

A) 7.8 million
B) 8.0 million
C) 4.8 million
D) 3.9 million