The Reliability of a New Model of CD Player Can $\frac { 1 } { 4 }$

Multiple Choice

The reliability of a new model of CD player can be described by the exponential function R(t) = 2.7-^(1/3) ^t, where the
reliability R is the probability (as a decimal) that the CD player is still working t years after it is manufactured. Round the
answer to the nearest hundredth. Then write your answer as a percent.
-What is the probability that the CD player will still work $\frac { 1 } { 4 }$ of a year after it is manufactured?

A) $9 \%$
B) $92 \%$
C) $72 \%$
D) $27 \%$