The Fraction of Television Sets Manufactured by a Certain Company $f ( t ) = e ^ { - 0.2 t }$

Multiple Choice

The fraction of television sets manufactured by a certain company that are still in working condition after t years of use is approximately $f ( t ) = e ^ { - 0.2 t }$ .What fraction can be expected to fail before 2 years of use? Round your answer to two decimal places,if necessary.

A) 1.49
B) 0.91
C) 0.67
D) 0.33