Explain how you can determine that the following system has one unique solution – without actually solving the system. 2x+y = 4
2y = 6 - 2x

Which of the following is equal to the rational expression when x is not equal to -2 or -6?

The line plot below represents the number of letters written to overseas pen pals by the students at the waverly middle school.each x represents 10 students. how many students wrote more than 6 and fewer than 20 letters. a.250 b.240 c.230 d.220

Simplify: -2x 3 (-4) x 6 x (-5) x (-3) x 9