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Tutor profile: Marissa R.

Inactive
Marissa R.
I love math, but I'm good at many other subjects.
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Questions

Subject: Writing

TutorMe
Question:

Which sentence is written correctly: a) my Aunt is coming over for thanksgiving b) My Aunt is coming over for the thanksgiving. c) My aunt is coming over for Thanksgiving.

Inactive
Marissa R.
Answer:

The correct answer is C. The sentence begins with a capital letter and ends with a period. Also, "aunt" is a simple noun (not a proper noun), and should not be capitalized. Thanksgiving, however, is a proper noun and should be capitalized.

Subject: English

TutorMe
Question:

What is the difference between they're, their, and there?

Inactive
Marissa R.
Answer:

They're is a contraction of the words "they are". In order to tell if you should use this word, ask yourself if the phrase "they are" makes sense in the sentence. Their indicates possession and includes multiple people. One way I like to remember this is by recognizing that it contains the word "heir". An heir is a person who inherits something when someone dies, which indicates possession. There indicates location. The thing that helps me remember when to use this word is the fact that it contains the word "here", which is its opposite.

Subject: Algebra

TutorMe
Question:

You are setting up a savings account in August. You want to have at least 300 saved up by December. In August, you put $30 in your savings account. Write an equation that you can use to determine how much money you need to put into your savings account each month in order to reach your goal.

Inactive
Marissa R.
Answer:

In August, I put $30 into my account. I have four more months until December. Each month I need to put a specific amount into savings in order to have at least $300 by December. My equation is as follows: 30 + 4x >= 300 30 represents the initial amount I put into savings. 4 is the number of months between August and December. 4 times x represents the amount of money I will put into my account four times (each month) in order to reach at least 300. I must figure out what this unknown amount is (x), therefore I need to isolate unknown term by performing inverse operations. First, I will perform the inverse of 30 which is -30. When I subtract 30 from both sides of the equation, I will have 4x >= 270 Now I perform the inverse of multiplication, which is division. I have to divide both sides by 4 to isolate the variable x. This works because the coefficient divided by itself will always equal 1. Ultimately, I will have x >= 67.5. This means that I need to save at least $67. 50 per month in order to reach my goal of $300.

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