Jack earns $50 for washing cars on the weekend. He makes an average of $4.25 in tips per hour. Write the function of Jack's earnings, and solve for how much he would make after 6 hours. y = 4.25x + 50; $54.25 y = 50x + 4.25; $69.50 y = 50x + 4.25; $304.25 y = 4.25x + 50; $75.50