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# Tutor profile: Shawn J.

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Shawn J.
Senior Biochemistry Student
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## Questions

### Subject:Basic Chemistry

TutorMe
Question:

Which of the following has a positive charge? A) Electron B) Neutron C) Atom D) Proton

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Shawn J.

The answer is D) Proton Electrons have a (-) charge, Neutrons have no charge and Atoms charge depends on a multitude of factors

### Subject:Biology

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Question:

Which nucleuotide is found in RNA but not DNA? A) Adenine B) Uracil C) Guanine D) Cytosine

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Shawn J.

### Subject:Algebra

TutorMe
Question:

Solve the following equation for "x" 3x+4=31

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Shawn J.

1) To solve you first need to isolate the term that contains the variable, in this case that term is '3x'. 2) So we first subtract 4 from both sides to yield 3x = 27 3) Then we divide both sides by '3' to isolate x leaving us with x = 9 4) We can check our answer by plugging 9 in for 'x' in the original equation. 5) 3*9 + 4 = 31 6) Our final answer is x = 9

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