What word phrase can you to represent the algebraic expression? 5x + 2​

What is the sum of these mixed numbers 2 1/8 + 4 3/8

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.

Factor and solve to find roots x squared -x - 90 =0