The Displacement from Equilibrium of an Oscillating Weight Suspended by a Spring

Multiple Choice

The displacement from equilibrium of an oscillating weight suspended by a spring and subject to the damping effect of friction is given by $y = 2 e ^ { - t } \cos 6 t$ where y is the displacement in centimeters and t is the time in seconds (see figure) .Find the displacement when $t = \frac { 1 } { 5 }$ .Round your answer to two decimal places.​ ​ ​

A) 0.89 cm
B) 0.59 cm
C) 0.99 cm
D) 1.09 cm
E) 0.79 cm