A contractor purchases 7 dozen pairs of padded work gloves for $
99.96.
He incorrectly calculates the unit price as $
14.28 per pair for the expense report. What is the correct unit price? What is the error?

Plz help plz give me the answer

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

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.