Can someone explain how I should solve this?

Which point is on the line y=-2+3? (-2,-1) (3,3) (3,-3) (-3,-9)

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony?