exam Maths Puzzle Numerical Ability

Each of the red curves is a transformation of the graph y = 0.5x, shown in black. Write an equation for each red curve.

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exam Other Question

Cofee merchant has coffee beans that sell for $9 per pound and $12 per pound. The two types are to be mixed to create 100lb of a mixture that will sell for $11.25 per pound. How much of each type of bean should be used in the mixture? Number Problems. Find two consecutive positive integers such that the sums of their squares is 85.

I am in need of some help with this problem. Thanks.