Is the buying power increasing or decreasing

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An economist predicts that the buying power B(t) of a dollar t years from now will be B(t)=(0.95)^t. Find the rate at which the buying power of a dollar will be chaging t years from now. Is the buying power increasing or decreasing? Why? At what rate will the buying power be changing two years from now?

Reference no: EM13187823

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