A rectangular page that is x inches wide and has an area of 240 square inches. The page contains a printable area of 160 square
inches. It has 2 inch margins at the top and bottom and 1 inch margin on each side. Which equation can be used to represent the printable area in terms of x?
• 160= (x-2)(240-4x) over x
• 160= (x^2-4)(60-2x) over x • 160= (x+2)(240+4x) over x or • 160= (x-4)(60-2x) over 2x ??!!
• 160= (x-2)(240-4x) over x
• 160= (x^2-4)(60-2x) over x • 160= (x+2)(240+4x) over x or • 160= (x-4)(60-2x) over 2x ??!!
2 answers:
The area of the rectangular page is 240 square inches.
The rectangular page has a width of x inches and a length of .
The area of printable page is 160 square inches.
The rectangular page has 2 inch margins at the top and 1 inch margins on each side.
Area of a rectangle is given by length × width.
The printable area is (x - 2) × ( - 4) = 160 square inches.
This can also be represented as:
160 = (x - 2)()
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ANSWER
x coordinates of the intersection points
EXPLANATION
The given system of equations is:
We want to use the graph of these functions to solve
The point of the intersection of the graph gives the solution to the simultaneous equation above.
Hence the x-coordinates of the intersection points gives the solution set of
The last choice is correct.