SAT Math · Nonlinear functions · easy
The value of an investment, in dollars, after t years is modeled by V(t) = 5000(1.06)^t. According to this model, by what percent does the…
The value of an investment, in dollars, after years is modeled by . According to this model, by what percent does the investment's value increase each year?
Answer and explanation
Answer: B: 6%
In an exponential model , the base is the growth factor per year. Here , so each year the value is multiplied by 1.06, an increase of 6%. That is choice B. Choice A (106%) is the percent of the previous value that remains, not the increase. Choice C (1.06%) misreads the decimal as a percent. Choice D (60%) shifts the decimal point the wrong way. Subtract 1 from the base and convert the decimal to a percent: .
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