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# Tutor profile: Theresa A.

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Theresa A.
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## Questions

### Subject:Writing

TutorMe
Question:

I'm supposed to write a 10-page paper on (fill in with your topic). How am I supposed to fill up 10 pages with (your topic)? How many points do I even need to make?

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Theresa A.

TutorMe
Question:

Does it matter to score well on the PSAT, since it's just a practice test for the SAT? Do I even have to take it?

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Theresa A.

### Subject:Algebra

TutorMe
Question:

How do you find f(4) - f(2) if f(x) = 8x^2?

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Theresa A.

To find f(4) - f(2), you must find the values of f(x) when x=4, and x=2, which you find by substituting 4, then 2, into the function for x. Given that f(x) = 8x^2, f(4) = 8(4)^2 = 8(16) = 128 f(2) = 8(2)^2 = 8(4) = 32 Now that we've found f(4) = 128 and f(2) = 32, we can substitute those values into the equation to get the final answer. f(4) - f(2) = 128 - 32 = 96

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