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538

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question

suppose $5400 is invested in an account at an annual interest rate of 7.2% compounded continuously. How long (to the nearest tenth of a year) will it take the investment to double in size?

extra5hits Jul 11, 2016

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543

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need help

A can of soda at 81 degrees F. is placed in a refrigerator that maintains a constant temperature of 38 degrees F. The tempurature T of the soda t minutes after it is placed in teh refrigerator is given by T(t) = 38 + 43e-0.58t

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extra5hits Jul 11, 2016

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533

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question

Multiply and simplify:(7+4i)2
Write the answer in the form a + bi, where a and b are real numbers

extra5hits Jul 11, 2016

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1898

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help

How much money needs to be invested now to obtain $2000 in 3 years if the interest rate in a savings account is 0.25%, compounded continuously? Round your answer to the nearest cent.

extra5hits Jul 10, 2016