Question

The amounts A, B, and C, in grams, are decaying exponentially according to the functions below. Which amount will decay to 4 grams fastest?

A(t) = 8 e-0.1386t

B(t) = 10 e-0.2t

C(t) = 9 e-0.3t

Answer 1

Determine the amount of A,B and C present at the beginning of the timing, or when t=0. From there, you'll need to determine how long it takes for each of the amounts to decay to 4 grams. The answer will be the amount that corresponds to the lowest value for t.

Answer 2

thank you! =)