Please help me i need help on this

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.

Y=21.95x+10 y=22.45x solve by substitution