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# Tutor profile: Katherine C.

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Katherine C.
Bilingual Marketer with Engineering Background
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## Questions

### Subject:Spanish

TutorMe
Question:

Since they both mean "to be", when do you use ser versus estar to describe a person?

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Katherine C.

I usually think of ser as more permanent and estar as more temporary. For example, if I am describing Maria as happy. I will use ser if I want to say Maria is always a happy person. That's a permanent part of being Maria. I will use estar if I want to say Maria is in a happy mood. Moods change so she's happy now, something could change later. Ser is also used for characteristics like height, size, or hair color.

### Subject:Marketing

TutorMe
Question:

What is the difference between a feature and a benefit?

Inactive
Katherine C.

A feature is something your product does or a service it provides. For example, my laptop has a 15" monitor. This is a statement of fact that I wanted to know when purchasing my laptop. On the other hand, a benefit speaks to the often more emotional driver for the feature. It answers why does the customer care. In this case, a larger screen makes it easier for me to see more information at once.

### Subject:Algebra

TutorMe
Question:

Solve for x. 6(-2x +4) = 4x +8

Inactive
Katherine C.

I would approach this problem by starting with the parentheses on the left. If I solve that portion the problem becomes 6*-2x + 6*4 = 4x+8 Multiplying it out the equation becomes -12x + 24 = 4x + 8 After that, I like to have my x's on one side of the equal sign and my numbers on the other (if possible). I also like to work with positive numbers so I would move the -12x to the right hand side. Therefore the equation becomes 24 = 12x + 4x + 8 When I say "move" in this case, I'm actually adding a +12x to both sides of the equation. By doing this, I'm canceling out the -12x on the left (-12x + 12x = 0) Once I moved the 12x, I would combine the x terms the equation becomes 24 = 16x +8 Then, as I said, I would move the x terms to one side of the equal sign and the numbers to the other. So I would move the 8 to the left side of the equation 24 - 8 = 16x Then the equation is 16 = 16x If I divide both side of the equation by 16 then x = 1. Ta da! We have solved for x.

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