Solve the Problem $W ( t ) = 25$ Te ${ } ^ { - t }$

Multiple Choice

Solve the problem.
-The rate of water usage for a business, in gallons per hour, is given by $W ( t ) = 25$ te ${ } ^ { - t }$ , where $t$ is the number of hours since midnight. Find the average rate of water usage over the interval $0 \leq \mathrm { t } \leq 6$ .

A) 0.07 gallons per hour
B) 4.09 gallons per hour
C) 4.12 gallons per hour
D) 4.24 gallons per hour