197k views
3 votes
A company has found that its rate of expenditure in hundreds of dollars on a certain type of job is given by e’(x)=2x+7, where x is the number of days since it start of the job. Find the total expenditure if the job takes three days

A company has found that its rate of expenditure in hundreds of dollars on a certain-example-1
User Marthym
by
7.8k points

1 Answer

3 votes

The given equation represents the rate of expenditure in hundreds of dollars for a certain type of job:


E^(\prime)(x)=2x+7

→ x represents the number of days since the start of the job

You have to determine the expenditure, E'(X), when the job takes three days (x=3), to do so replace the number of days into the equation and solve for E'(x)


\begin{gathered} E^(\prime)(x)=2x+7 \\ E^(\prime)(3)=2*3+7 \\ E^(\prime)(3)=6+7 \\ E^(\prime)(3)=13 \end{gathered}

The total expenditure for a job that takes 3 days will be 13 hundred dollars.

User Yessica
by
8.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories