exam Maths Puzzle Numerical Ability

an airplane files 500 miles with the wind for 2 hours and returns against the wind in 3 hours find the speed of the wind and the air speed of the plane

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This is from a worksheet:

Graph this equation: 3y-9x=30

Then must graph this equation.
Thanks very much! 94. Demand for pools. Tropical pools sell an aboveground model for p dollars each. The monthly revenue from the sale of this model is given by

R = -0.08p^2 + 300p
Revenue i