exam Maths Puzzle Numerical Ability

JDK company wants to sell x items. The unit price function 25-1.5x If revenue function given by R(x) = price per item times # sold. Find revenue as f(x)__________________
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exam Other Question
Consider the function P(x)=x(30-x). Is this function odd, even or neither? What do you expect if you graph this function? How do you simplify the equation -w=14?