8.8 Rates of Change in Exponential and Logarithmic Functions
Chapter
Chapter 8
Section
8.8
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Solutions 14 Videos

Jerry invests $6000 at 7.5% a, compounded annually.

a) Determine the equation of the amount, A, after t years.

b) Estimate the instantaneous rate of change in the value at 10 years.

c) Suppose that the interest rate was compounded semi-annually instead of annually. What would the instantaneous rate of change be at 10 years?

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Q4

For 500 g of a radioactive substance with a half-life of 5.2 h, the amount remaining is given by the formula \displaystyle{M(t)=500(0.5)^{\frac{t}{5.2}}} where M is the mass remaining and t is the time in hours.

a) Calculate the amount remaining after 1 day.

b) Estimate the instantaneous rate of change in mass at 1 day.

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Q6