Set 5: Exponential Functions (Intermediate)

[Variation 1] **Choice C is the best answer.** After 3 doublings: 300 times 2 to the power of 3 = 2400

Explanation

Answer: C

PROBLEM

Recent studies show that a population starts at 300 and doubles every year. What is the population after 3 years?

A population starts at 300 and doubles every year. What is the population after 3 years?

4800

2398

2400

✓ Correct

2399

Detailed Explanation

[Variation 1] Choice C is the best answer. After 3 doublings: 300 times 2 to the power of 3 = 2400

Why others are wrong:

A: 4800 is incorrect because it does not satisfy the equation.

B: 2398 is incorrect because it does not satisfy the equation.

D: 2399 is incorrect because it does not satisfy the equation.