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Rachael J.
Senior in High School
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Pre-Algebra
TutorMe
Question:

Gary has $30 dollars. After buying 7 sea shells, he only had 9 dollars left. How much did each sea shell cost.

Rachael J.
Answer:

Each sea shell costed 3 dollars. By working backwards, you subtract 9 from 30 to get 21 then divide that by 7 to get 3.

Biology
TutorMe
Question:

The movement of particles against the concentration gradient is called?

Rachael J.
Answer:

Active transportation. The movement is from high to low concentration.

Algebra
TutorMe
Question:

Which of the following is real, rational, and and an integer? 5/8, 3.14159, 8?

Rachael J.
Answer:

8 is real, rational, and an integer. 5/8 is not an integer, but it is still real and rational. 3.14159 is not an integer or rational, but it is still real.

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