exam Maths Puzzle Numerical Ability

I need some help on this problem:

I need to simplify:
10 lb. 28 oz.

Thanks,
Ashley

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exam Other Question

How do you test if something is a function on a graph? ......I remember my teacher saying something about using a pencil and lying it down on the graph, or something like that...please help!!!-I have a final TOMMMORROW!!! Can you tell me if this is correct?
Find three consecutive integers such that four times the sum of the first and second is 17 more than 7 times the third
1st integer:n
2nd integer:n+2
3rd integer:n+4
4n+7(n+4)+17