Determine if its a expansion or degeneration.Then uncover the percent boost of decrease. 1.y=16(.25)^x 2.y=0.8(1.28)^x 3.y=17(1/5)^x"".
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You are watching: What is the percent rate of change in function y=(0.98)^x y= 16(0.25)^x

The exponential equation represents an exponential degeneration because the price of decay is 0.25 which is less than 1.

The general form equation is:

y(x)= a(1-r)^x such that r is the decay percent.

Comparing 2 equation we have 1-r = 0.25

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y= 16(0.25)^x

The exponential equation represents an exponential decay bereason the price of degeneration is 0.25 which is much less than 1.

The basic develop equation is:

y(x)= a(1-r)^x such that r is the decay percent.

Comparing 2 equation we have actually 1-r = 0.25

Then, the decay percent is 75%.

2. y= 0.8(1.8)^x

The equation represents exponential expansion because the development factor is greater than 1.

Then, the growth percent is 80%

3. y= 17(1/5)^x

The equation represents exponential decay because 1/5 is less than 1.

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Then, the decay percent is 80%

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