exam Maths Puzzle Numerical Ability

Given a parabola whose axis of symmetry is the y-axis. The point (1,5)lies on the parabola. which point also lies on the parabola?

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{5/x+2}-3/-x-2}
Simplify Brazilian coffee sells for $4 a pound. Columbian coffee sells for $9 a pound. How much of each kind should be used to make twenty pounds of a blend of the two that sells for $5 a p