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fredd [130]
3 years ago
6

An initial investment of $100 is now valued at $150. The annual interest rate is 5%, compounded continuously. The equation 100e0

.05t = 150 represents the situation, where t is the number of years the money has been invested. About how long has the money been invested? Use your calculator and round to the nearest whole number.
Mathematics
2 answers:
fenix001 [56]3 years ago
8 0

Answer:

8

Step-by-step explanation:

edg

Nuetrik [128]3 years ago
4 0

Answer:

8 years

Step-by-step explanation:

An initial investment of $100 is now valued at $150. The annual interest rate is 5%, compounded continuously. The equation 100e^{0.05t} = 150 represents the situation, where t is the number of years the money has been invested.

To find out how long has the money invested we need to find out 't'

100e^{0.05t} = 150 , solve for t

divide both sides by 100

e^{0.05t} = 1.5

Now to remove 'e' we take ln on both sides

ln(e^{0.05t) = ln 1.5

the value of ln(e)= 1

0.05t = ln 1.5

Now divide by 0.05 on both sides

t = 8.10930

The money is invested for 8 years

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