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Question

given the following exponential function, identify whether the change represents growth or decay, and determine the percentage rate of increase or decrease. y=320(0.665)^x

Answer 1

If the base < 1, and the exponent is positive, then the function represents decay

0.665< 1, but x could be either + or -

the exponent gives the rate of decrease, if x>0 or the rate of decrease if x<0

x= rt where t = time and r = rate of change