Find the product.

(3n - 10p)^2

6n^2 - 30np + 20p^2

9n^2 - 60np + 100p^2

9n^2 - 100p^2

9n^2 - 20p + 100p^2

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Which rational number could be graphed between -4 and -5

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.