Which function represents exponential decay?

With out any functions to choose from...this is difficult.  But look for the equation that has a a decimal raised to a power (.07)^2

f(x)=2(2/3)x

Step-by-step explanation:

compared to all of the other answers, 2/3 is the only one between 0-1 for the exponential decay.

saving = more money

step-by-step explanation:

if you have 100 bucks, and you want to buy a candy bar, even if you have one at home, if you choose not to buy it, you save.

~courtney

the answer is 5/14.

hope this .