How do I solve this?

1. Sep 30, 2009

queenspublic

1. The problem statement, all variables and given/known data

9.0 = 34.2(1 - e-t/2.7)

Solve for t

2. The attempt at a solution

.263158 = (1 - e-t/2.7)

What is e?

2. Sep 30, 2009

rl.bhat

e-t/2.7 = 1 - 0.263158
Take ln. on both side. Note that ln(e) = 1. Solve for t.

3. Sep 30, 2009

S_Happens

e is an extremely useful mathematical constant. Are you familiar with logarithms (specifically natural logarithms)?

Edit- I guess my simple question isn't very helpful when someone gives away the answer right before me...

Last edited: Sep 30, 2009