Mathematics
insanitylives14
5

An investment of $2000 in a bank account doubles every five years. The function that models the growth of this investment is f(x)=2000•2^x, where x is the number of doubling periods, or 10 years?

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(1) Answers
kaiyawashere12

x=1 after the first 5 years; x=2 after the another 5 years (or better said after the first 10 years in the bank); x=3 after another 5 years ( or better said after the first 15 years in the bank) and so on... x is the number of 5 years intervals which have passed up to a moment in time :)

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