exam Maths Puzzle Numerical Ability

The price p, in dollars, and the quantity x sold of a certain product obey the demand equation:

x = -5p + 100, 0 (less than or equal to) p (less than or equal to) 20

a.) ex

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exam Other Question
Fund the domain of the function:

f(x)=square root of 81-x squared The length of a rectangle is 3 m more than twice its width. If the perimeter of the rectangle is 42 m, find the dimensions of the rectangle.