A cell phone costs $50. It is on sale for 30% off. How much would you save?

Which expressions are equivalent to -6 + 3m

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm