Solve the Problem $E^{\prime}(x)=8 x+7$ , Where $x$ Is the Number of Days Since the Start of the Expenditure

Multiple Choice

Solve the problem.
-A certain company has found that its expenditure rate per day (in hundreds of dollars) on a certain type of job is given by $E^{\prime}(x) =8 x+7$ , where $x$ is the number of days since the start of the job. Find the expenditure if the job takes 5 days.

A) $\$ 47$
B) $\$ 4700$
C) $\$ 13,500$
D) $\$ 135$