18x-6y= 54
12y=6x-18
Solve this system of equations using the substitution method.

If the measure of angle 1 is 110 degrees and the measure of angle 3 is (2 x+10 degree), what is the value of x?

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)