Kwesi is putting on sunscreen. he uses 3ml to cover 45 cm2 of his skin. he wants to know how many milliliters of sunscreen g he needs to cover 240 cm2 of his skin. he assumes the relationship between milliliters of sunscreen and area is proportional.

Pls! does anybody know a shortcut for answering these types of questions in the future?

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10