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December 9, 2016

Homework Help: Math help please

Posted by Delilah on Monday, May 6, 2013 at 7:46pm.

7. In the expression –7x – 5x2 + 5, what is the coefficient of x?

7
5
–5
–7

8. Write the expression using a single exponent. 2^2 • 2^8

4^10
2^10
4^16
2^16

9. Write the expression using scientific notation. (2.5 • 104)(4 • 103)

10 • 10^7
10 • 10^8
1 • 10^8
10• 10^12

My answers:
7. 5
8. 2^10
9. 10 • 10^7

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