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A person puts $100.00 into a savings account with 2.4% annual interest rate (computed continuously). The value of such an investment is given by: V=Pe(rt),
A person puts $100.00 into a savings account with 2.4% annual interest rate (computed continuously). The value of such an investment is given by: V=Pe(rt), where P is principal invested, r is the annual interest rate, and t is the number of years receiving interest. After how many years has the total interest exceeded $5.00? Round up to the nearest whole year.
Hint: For convenience, the credit union provided the following table of the exponential function:
r t | V |
0.024 | 1.0243 |
0.048 | 1.0492 |
0.072 | 1.0747 |
0.096 | 1.1008 |
0.120 | 1.1275 |
0.144 | 1.1549 |
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