
Exponential Functions
I can't figure out how to find the base of the exponential functions...really ticking me off lol. I'd appreciate any help. I have two different problems
Problem 1:
Determine growth or decay factor
x 2  1  0  1  2  3  4
___________________________
y6.252.5  1  .4  .16.064 .0256
the decimals really screw it up, and I've tried many numbers...is there any kind of formula to figure this out? our teacher just told us that we might have to do some "guess work"
Problem 2:
Assume that y is an exponential function of x
If the growth factor is 1.08, then complete the following table
x 0  1  2  3
_____________________
y 23.1
They gave me the first Y point... I can't figure out any of the others...I'm pretty bad at math...if anybody knows a formula I'd greatly appreciate it.

Problem 1:
Well lets examine these numbers.
What do you see here? What is
The answer is

Thanks! I don't know how I didn't see that in the first problem...guess I didn't look hard enough...
Second problem, I don't understand how y is 23.1 but x is 0, and using that with the information you gave me..if you could explain a bit more, I'd appreciate it tons..


Thank you so much for the help! I understand it now... the only part I don't understand is on problem 2, how the 23.1 turns into 2.31. I've been looking it over and I can't figure it out. I know you've helped me alot already...so if you don't feel like it, I understand :P


Thought it was a typo, just wasn't sure if I was doing something wrong, lol. Thanks, Anonymous1.