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# Tutor profile: Tiara H.

Inactive
Tiara H.
Tutor for 4 years, future Statistician
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## Questions

### Subject:Basic Math

TutorMe
Question:

An instrument store gives a 10% discount to all students off the original cost of an instrument. During a back to school sale an additional 15% is taken off the discounted price. Julie, a student at the local high school, purchases a flute for \$306. How much did it originally cost? A. \$325 B. \$375 C. \$400 D. \$408 E. \$425

Inactive
Tiara H.

C. The equation, x-0.10x-0.15(x-0.10x)=306, may be used to solve the problem. Solving for x gives 0.90x - 0.15x + 0.015x = 306, where x = 400. Thus, the original price was \$400.

### Subject:HTML Programming

TutorMe
Question:

<figure> <picture> <source media="(min-width: 40em)" srcset="large.jpg 1024w, medium.jpg 640w, small.jpg 320y"> <img src="medium.jpg" alt="London by night"> </picture> <figcaption>A landscape of London by night</figcaption> </figure> Is it valid? If not, why?

Inactive
Tiara H.

The markup uses the picture element, which is a pretty new addition to the specification. The code is all valid apart from the last image specified in the srcset attribute; 320y isn’t a valid value. If the y is replaced with a w, it becomes valid though.

### Subject:World History

TutorMe
Question:

Why do we need to study history?

Inactive
Tiara H.

The past causes the present, and so the future.

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