Solve the system of linear equations by graphing. y = –x – 7 x + 2y = 4 what is the solution to the system of linear equations? (–4.5, 4.25) (–1.7, –2.8) (0, –7) (3, 0.5)

The weekly revenue for a company is r = 3p^2 + 60p + 1060, where p is the price of the company's product. what price will result in a revenue of $1200.

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.

Jane has 5 nickels. john has 3 dimes. jane says she has a greater amount of money. with the information given, is she correct?