Set 12: Exponential Functions (Intermediate)

Explanation

Answer: B

If $y = 50(3)^x$ , what happens to $y$ when $x$ increases by 1?

It increases by 3.

It is multiplied by 3.

✓ Correct

It increases by 50.

It is multiplied by 50.

Detailed Explanation

Choice B is correct. Choice B is the correct answer. The base 3 is the multiplier. 1. Concept: Exponential growth means multiplying by the base $b$ for each step. 2. Identify: $b=3$ . 3. Conclusion: $y$ is multiplied by 3. Strategic Tip: Exponential functions are about multiplication, not addition. Choice A is incorrect because adding 3 would be linear. Choice D is incorrect because 50 is the initial value.

Key Steps:

•

The correct answer is It is multiplied by 3.

Why others are wrong:

A: Choice A is incorrect and may result from a calculation error.

C: Choice C is incorrect and may result from a calculation error.

D: Choice D is incorrect and may result from a calculation error.

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