The first year Eleanor organized a fund-raising event, she invited 30 people. For each of the next 5 years, she invited double the number of people she had invited the previous year. If f(n) is the number of people invited to the fund-raiser n years after Eleanor began organizing the event, which of the following statements best describes the function f ?
A
The function f is a decreasing linear function.
B
The function f is an increasing linear function.
C
The function f is a decreasing exponential function.
D
The function f is an increasing exponential function.
Source: Questions from the AGIEval benchmark's SAT subsets, derived from pre-2016 College Board SAT exams.
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These items follow the pre-2016 paper SAT format and do not reflect the current digital SAT. Useful as a benchmark set, not as current test preparation.
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