Identify whether the equation represents an exponential growth or exponential decay function. 1. y = 1/4 (1/e)^-2x
2. y = (1/e)^4x
3. y = 2e^-x + 1

How do you do this?

In the diagram of circle a what is m

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.

Suppose that in 2008 , 840,800 citizens died of a certain disease assuming the population of teh country is 399 miliion, what is the mortality rate in units of deaths per 100,000 people?