Can someone help me get the answer? finals is soon

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5

A0.40 kg soccer ball is kicked so that its incoming velocity of 5 m/s is changed to an outgoing velocity of -25 m/s. what impulse does the player apply to the ball?