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Unformatted text preview: 2 9 y x = , another at the origin, a third on the positive yaxis, and the fourth on the positive xaxis. (a) Express the area A as a function of x . (b) For what value of x is A the largest? (c) What is the domain of A ? Guiding Problem 4 Let ( 29 , P x y = be a point on the graph of 2 25 y x =. (a) Express the distance d from P to the point ( 29 1,0 as a function of x . (b) What is d if x =2? Answers: 1. (a) ( 29 2 1 4 150 R x x x = + (b) $20,000 (c) 300; $22,500 (d) $75 2. 250 x 500 x 250 3. (a) ( 29 3 9 A x x x =(b) 3 x = (c) (0, 3) 4. (a) 4 2 49 2 626 d x x x =+ (b) 21...
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 '10
 Bergthold,Trisha
 Math

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