what is the percent rate of change in function y= (0.98)^x determine whether the function represents exponential growth of exponential decay

2% growth

20% growth

2% decay

0.2% decay

5logb(y) + 4logb(x)

logb(y^5+x^4)

logb(y^5x^4

(5+4) logb(y+x)

logb(yx^5+4)

3e^2x + 2 = 28

1.0797

0.4689

0.9261

2.1595

I really need help with these three problems.

Thank you in advance!

### 1 Answer

2% decay

all you do here is compute the function when x is equal to 1 (which gives 0.98), when x is equal to 2 (which gives 0.9604) and compute the percentage difference which is:

((0.98 – 0.9604) / 0.98) X 100

Or more generally:

((initial value – changed value) / initial value) X 100

logb(y^5+x^4)

You can’t answer the third one without knowing the value of x.