exam Maths Puzzle Numerical Ability

Business and Finance When x number of units are sold, the price of each unit(in dollars) is given by p=-x/2+75. find the unit price when the following quantities are sold 2,7,9,11

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exam Other Question

The points P(-4,-8), Q(3,-2), and R(10,6) are on a coordinate plane. Where should the point S be located so that the figure PQRS is a parallelogram? The square of a positive number is four more than three times the positive number. Find the number.