Set 4: Exponential Functions (Intermediate)

[Variation 1] **Choice D is the best answer.** After 2 doublings: 200 times 2 to the power of 2 = 800

Explanation

Answer: D

PROBLEM

Recent studies show that a population starts at 200 and doubles every year. What is the population after 2 years?

A population starts at 200 and doubles every year. What is the population after 2 years?

400

1600

799

800

✓ Correct

Detailed Explanation

[Variation 1] Choice D is the best answer. After 2 doublings: 200 times 2 to the power of 2 = 800

Why others are wrong:

A: 400 is incorrect because it does not satisfy the equation.

B: 1600 is incorrect because it does not satisfy the equation.

C: 799 is incorrect because it does not satisfy the equation.

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