Elimination was used to solve a system of equations. One of the intermediate steps led to the equation 3x = 18.
Which of the following systems could have led to this equation?
2x + y = 24
- x - y = 6
x + y = 4
x - 2y = 10
3x + y = 18
- 3x - y = - 18
4x + y = 20
x - y = 2

Sam makes his sales calls according to a pattern. he travels either north or south depending on the calendar. some of his past trips were as follows: on february 17, april 24, june 10, september 19, and november 3 he drove north. on february 28, may 25, august 22, november 20, and december 18, he drove south. describe sams' pattern. in which direction will sam drive on oct4 and oct 24?

In the geometric progression –3, 12, −48… what term is 3,072?

Choose the linear inequality that describes the graph. the gray area represents the shaded region. a: y ≤ –4x – 2 b: y > –4x – 2 c: y ≥ –4x – 2 d: y < 4x – 2