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1) Given the function g(x) = 20 - x, evaluate g(-10).

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Look at attachment. has all info needed. need

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.