Valentina has a mass of 120 lb. What is her weight on the Earth (in lbf)?

Valentina has a mass of 120 lb. What is her weight on the Earth (in lbf)?
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Write down the equation of the circle in General Form.

Write down the equation of the circle in General Form.
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Simplify (m + n)2 + (m - n)2 - 2(m + n)(m - n)

Simplify (m + n)2 + (m - n)2 - 2(m + n)(m - n)
http://www.getquiz.co/q/q_804SGT2g/

In how many ways can you express the number 2003 as a sum of two prime numbers?

In how many ways can you express the number 2003 as a sum of two prime numbers?
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Simplify:

Simplify:
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Round 239.456 to the nearest hundred

Round 239.456 to the nearest hundred
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The diagram shows the number line from 0 to 1 divided into 16 equal parts.

The diagram shows the number line from 0 to 1 divided into 16 equal parts.
http://www.getquiz.co/q/q_2701Frdxd/