exam Maths Puzzle Numerical Ability

draw a worm whose tail end has these expressions in:
3(2x^2 + 7)

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exam Other Question

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 qualities are sold: 2,7,9,11. 10x-1/4=9x+3/8