6. The table below gives the average cost, x (to the nearest hundred) of tuition and fees, y, at a four-year college.

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)

Can someone me with this problem i don't understand i need

Solve the triangle. a = 21°, c = 105°, c = 5