Giúp mình giải quyết bài tập câu 1 2 3 4

(08.01)consider the following pair of equations: x + y = −2 y = 2x + 10 if the two equations are graphed, at what point do the lines representing the two equations intersect? (−4, 2) (4, 2) (−2, 4) (2, 4)

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

An appliance store sells lamps at $95.00 for two. a department store sells similar lamps at 5 for $250.00. which store sells at a better rate