Enable contrast version

# Tutor profile: Nora C.

Inactive
Nora C.
Math and French Tutor for Four Years
Tutor Satisfaction Guarantee

## Questions

### Subject:French

TutorMe
Question:

Easier: Translate this phrase from French to English: We ate dinner. Harder: Translate this phrase to French: It is necessary that you go to the meeting.

Inactive
Nora C.

Easier: Nous avons dîné. Harder: Il faut que vous alliez au rendez-vous. This phrase requires the subjunctive tense.

### Subject:Calculus

TutorMe
Question:

In economics, marginal cost is defined as the derivative of the cost function. If the cost of calculus textbooks can be defined as $C(x)=10+2x^2+3x^3$, what is the marginal cost? Evaluate the marginal cost at $x=2$.

Inactive
Nora C.

Marginal cost is $C'(x)$, the derivative. By calculating this, we see $C'(x)=4x+9x^2$. Next, we evaluate $C'(x)$ at $x=2$. We get $C'(2)=4\cdot 2 + 9\cdot 2^2$, or $C'(2)=8+36=44$.

### Subject:Algebra

TutorMe
Question:

Solve the following equation by factoring and by the quadratic equation. $$y=x^2-3x+2$$ Which is easier?

Inactive
Nora C.

By factoring, we see that $y=(x-1)(x-2)$, so $x=1$ and $x=2$. With the quadratic equation, we have $x=\frac{3\pm\sqrt{9-4\cdot 1\cdot 2}}{2}=\frac{3\pm\sqrt{1}}{2}=\frac{3\pm 1}{2}$, so $x=\frac{4}{2}$ or $x=\frac{2}{2}$. We see $x=2$ and $x=1$. Both methods yield the same result, but using factoring is easier.

## Contact tutor

Send a message explaining your
needs and Nora will reply soon.
Contact Nora

Start Lesson

## FAQs

What is a lesson?
A lesson is virtual lesson space on our platform where you and a tutor can communicate. You'll have the option to communicate using video/audio as well as text chat. You can also upload documents, edit papers in real time and use our cutting-edge virtual whiteboard.
How do I begin a lesson?
If the tutor is currently online, you can click the "Start Lesson" button above. If they are offline, you can always send them a message to schedule a lesson.
Who are TutorMe tutors?
Many of our tutors are current college students or recent graduates of top-tier universities like MIT, Harvard and USC. TutorMe has thousands of top-quality tutors available to work with you.
BEST IN CLASS SINCE 2015
TutorMe homepage