Free points yall. merry xmas

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 the given system of equations. 2y= -x+9 , 3x-6= -15

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?