This is what I do and don't know what's wrong or what to do next:
f(x) = ac^x + k
f(x) = ac^x
f(x) = 5.5(1.9)^x
9/5.5 = 1.9^x
log (9/5.5)/log(1.9) = x
x = 0.767271953
What am I doing wrong OR what does that small number mean?
Any help would be greatly appreciated!
Thanks in advance!