Help The question is in the picture ( PS. This is part two from my latest post)

Find the area of a trapezoid with a height of 23, base 1 of 10 and base 2 of 18

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

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