document.write( "Question 357035: Consider a function machine that accepts inputs as ordered \n" );
document.write( "pairs. Suppose the components of the ordered \n" );
document.write( "pairs are natural numbers and the first component is the \n" );
document.write( "length of a rectangle and the second is its width. The \n" );
document.write( "following machine computes the perimeter (the distance \n" );
document.write( "around a figure) of the rectangle. Thus, for a rectangle \n" );
document.write( "whose length, l, is 3 and whose width, w, is 1, the input \n" );
document.write( "is (3, 1) and the output is or 8. Answer each \n" );
document.write( "of the following: \n" );
document.write( "a. For each of the following inputs, find the corresponding \n" );
document.write( "output: (1, 4), (2, 1), (1, 2), (2, 2), (x, y). \n" );
document.write( "b. Find the set of all the inputs for which the output \n" );
document.write( "is 20. \n" );
document.write( "c. Is (2, 2) a possible output? Explain.\r \n" );
document.write( " \n" );
document.write( "\n" );
document.write( "Input=2l+2w \n" );
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