6
advanced-math

Which equation represents a value that starts at 5 and triples every minute?

A

y=5(3)ty = 5(3)^t

B

y=3(5)ty = 3(5)^t

C

y=5(1/3)ty = 5(1/3)^t

D

y=5+3ty = 5 + 3t

Correct Answer: A

Choice A is the correct answer. Tripling means b=3b=3.

  1. Initial: a=5a=5.
  2. Factor: b=3b=3.
  3. Equation: y=5(3)ty = 5(3)^t.

💡 Strategic Tip: "Triples" →×3\to \times 3.

Choice B is incorrect because it swaps aa and bb.

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Set 25: Exponential Functions 25