980=75(1-75e^(-.07t) find t

Do I divide 75 from each side to give me

980/75=1-75e^(.07t)

How do I bring the 1-75 to the other side now. The book I have on explaining this sucks big time.

Any clue?

Ok I came up with something?

now I divide both sides by 1-75 which gives me

(980/75)/1-75 = e^ -.07t

Then I multiply both sides by Ln which gives me

ln(980/75)/(1-75) = -.07t

then just divide again by -0.07 to isolate t.

Now if it makes sense not sure.

I got an answer of 0.9252???