Looks good!!
Nice Job!
I need to simplify this without using a calculator.
(3b^4c^-1)(2b^-7c^-8)
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42b^-5c^4
Here's my try at it:
3x2 (b^4)(b^-7) (c^-1)(c^-8)
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42 (b^-5) (c^4)
6 b^-3 c^-9
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42 b^-5 c^4
1 b^2
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7 c^13
^ This symbol indicates an exponent.