Set 2: Exponential Functions (Advanced)

Choice B is correct. Choice B is the correct answer. Doubling implies multiplying by 2. 1. Analyze: "Doubles" means the new value is 2 times the old value. 2. Identify Factor: The multiplier $b$ is 2. 3. Equation: $y = a(2)^x$. Strategic Tip: "Doubles" $\to b=2$. "Triples" $\to b=3$. "Quadruples" $\to b=4$. Choice A is incorrect because factor 1 means no change. Choice C is incorrect because 0.5 means halving. Choice D is incorrect because 100 might be confused with 100% growth (which is doubling), but the factor is $1 +1=2$.