Math

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A printed page is to have a total area of 100 square inches. The top and bottom margins are to be 1 inch and the side margins to be 1.5 inches. Let l represent the total length of the page and w represent the total width of the page.
a) Write an equation, using and , to express the constraint.
b) Write an equation, using and , to express the print area of the page.
c) Write the equation of the print area in terms of only.


for a) I am getting 2l+2w=100... I don't know if this is correct.. and for b and c I don't know how to do it.. help?....thanks ahead

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