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# Tutor profile: Briana G.

Inactive
Briana G.
Vanderbilt Student
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## Questions

### Subject:Basic Math

TutorMe
Question:

If a \$50 dorm chair is on sale for 30% off, how much is the new cost of the chair?

Inactive
Briana G.
Answer:

You can quickly find the answer by finding 10% of \$50 and multiplying it by 3. 50/10 = 5, or 10% of \$50. 5 * 3 is 15, therefore \$15 is %30 of \$50. If you subtract the discount from the initial cost of the chair, the new cost of the chair is \$35.

### Subject:Music

TutorMe
Question:

In 4/4 time, how many beats does a quarter note get?

Inactive
Briana G.
Answer:

1; in the time signature, the top number represents how many beats are in a measure, and the bottom number represents which note gets the beat. Because the bottom number is a 4, the quarter note gets the beat.

### Subject:Computer Science (General)

TutorMe
Question:

What is the difference between an interface and an abstract class, and in what situation would you use each?

Inactive
Briana G.
Answer:

An interface can not have implementations, while an abstract class has instance methods and can be implemented. Interfaces can only have final variables, while abstract classes can have static or final variables.

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