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Tutor profile: Jaclyn A.

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Jaclyn A.
Former Math Teacher - Experience with Middle School and High School Math
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Questions

Subject: Pre-Algebra

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Question:

Evaluate this arithmetic expression: 36 ÷ (7 - 4)^2 + 21

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Jaclyn A.
Answer:

Let's use the order of operations! P - E - M - D - A - S (Parenthesis, Exponents, Multiplication & Division, Addition & Subtraction) 36 ÷ (7 - 4)^2 + 21 36 ÷ (3)^2 + 21 36 ÷ 9 + 21 4 + 21 25 First, we completed the operation in parenthesis (7 - 4). Then, we completed the exponential portion of the expression (3^2). Next, we divided (36 ÷ 9) and finally added (4 + 21) to obtain the simplified expression.

Subject: Basic Math

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Question:

Store A is selling 8 potatoes for a total of $3.65. Store B is selling 7 potatoes for a total of $2.98. Which store offers the better deal?

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Jaclyn A.
Answer:

In order to solve this problem, let's find the cost of one potato at Store A and Store B. We will do this by dividing $3.65 by 8 for Store A and $2.98 by 7 for Store B. 3.65/8 = $0.46 per 1 potato (Store A) 2.98/7 = $0.43 per 1 potato (Store B) Since $0.43 is less than $0.46, Store B offers a better deal.

Subject: Algebra

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Question:

5x + 2(x + 7) = 14x – 7. Find x

Inactive
Jaclyn A.
Answer:

5x + 2x + 14 = 14x - 7 7x + 14 = 14x - 7 7x + 14 - 7x = 14x - 7 - 7x 14 = 7x - 7 14 + 7 = 7x - 7 + 7 21 = 7x 3 = x x = 3

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