For the function f(x)= ab^x, what are the possible values for b if the function is an exponential decay function? (There are two) a) 2^-1

b) 2-0.9999

c) square root of e

d) square root of 0.9

e) 1.5

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number tt of tokens james has is a function of gg, the number of games he plays

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?