I have two tasks that I'm unable to work out, and I hope someone could help me :)

TASK 1:

There are three unknown exponential functions:

y1 = f1 (t);

y2 = f2 (t);

y3 = f3 (t):

By measuring the values of t and yi, you get a linear relation between:

Yi = logci (yi) (log to the base of ci)

and t:

Yi = logsi (yi) = Ait + Bi (log to the base of si)

Describe the function f1 in the following way:

y1 = f1 (t) = Ce^(lambda*t)

The values are

i 1 2 3

Ai -1.25 1.53 -1.95

Bi 1.19 1.1 1.95

si 3.76 0.32 0.3

(i is always the base of A, B, s, Y and y)

TASK 2

Translate the equation

ln (y) = a ln (x) + b

to

y = f (x) = cx^r

when a=1.5486 b=0.9309