SAT Functions as Models
Algebra
Level
2
If the current through a conductor decreases exponentially with time according to the equation \(I(t)=I_{0}\left(\frac{5}{4}\right)^{-t},\) where \(I_{0}=64\) mA is the initial current, how many seconds after \(t=0\) will the current be approximately \(26\) mA?
(A) One
(B) Two
(C) Three
(D) Four
(E) Five
by
Tatiana Georgieva