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a cold dilemma

Algebra Level 1

The temperature in the Antarctic at 10 a.m. is -66 degrees F. From then on it gets warmer at a rate of 4 degrees per hour. What is the temperature at 10 p.m.?

48 degrees 91 degrees not enough information -114 degrees -18 degrees -21 degrees

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, conceptual quizzes.

Our wiki is made for math and science

Master advanced concepts through explanations,
examples, and problems from the community.

Used and loved by 4 million people

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including olympiad champions, researchers, and professionals.

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by Crash Ackerly

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