# Tutor profile: Colin S.

Inactive

Colin S.

Automotive lighting engineer (34 ACT)

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## Questions

### Subject: Pre-Calculus

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Question:

Find the slope of the equation y=5x^2-3x+7

Inactive

Colin S.

Answer:

y'=10x-3

### Subject: Pre-Algebra

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Question:

0.5x=12-y y=10 solve for x

Inactive

Colin S.

Answer:

x=4

### Subject: Algebra

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Question:

If I make $5 profit for every baseball I sell, and $7 profit for every basketball I sell, and I sold 45 total balls for a profit of $275 last week, how many baseballs and how many basketballs did I sell?

Inactive

Colin S.

Answer:

5x+7y=275 x+y=45 X = 20 baseballs Y = 25 basketballs

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