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1-2http://i144.photobucket.com/albums/r199/hei156/43.jpg 3.http://i144.photobucket.com/albums/r199/hei156/61.jpg

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http://i144.photobucket.com/albums/r199/hei156/43.jpg Let $y be Jerry's weekly wage before the increase. Then, Tom's weekly wage before the increase = $10y. 10y(1 + 5%) - y(1 + 10%) = 8460 10y(1.05) - y(1.1) = 8460 10.5y - 1.1y = 8460 9.4y = 8460 y = 900 10y = 9000 Before the increase, Jerry's weekly wage is $900, and Tom's weekly wage is $9000. http://i144.photobucket.com/albums/r199/hei156/61.jpg An obtuse is greater than 90o but smaller than 180o. 90

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