What does (r/s)(3) equal?

Will mark brainliest if you answer ! the taco shop sold 198 lunches friday. this number is 3 more than 3 times the number they sold monday. let n represent the number of lunches sold monday. which equation shows an equality between two different ways of expressing the number of lunches sold on friday? a. n – 3 = 198 b. 3n – 3 = 198 c. 3n + 3 = 198 d. n + 3 = 198

Solve: 3x+y=6 4x-2y=18 show all work !

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2