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Unformatted text preview: to (aqt73) – Challenge 2 – seckin – (54330) 1 This printout should have 9 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. 001 10.0 points A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 5 cm/sec. Express the radius r of this circle as a func tion of the time t and then determine A ◦ r, where A is the area of the ripple. 1. ( A ◦ r )( t ) = 25 π 2 t 2 2. ( A ◦ r )( t ) = 5 πt 2 3. ( A ◦ r )( t ) = 25 πt 2 4. ( A ◦ r )( t ) = 5 π 2 t 2 5. ( A ◦ r )( t ) = 5 t 002 10.0 points Use the table x 1 2 3 4 5 6 f ( x ) 4 3 6 2 6 1 g ( x ) 3 2 4 2 6 4 to evaluate each expression: ( a ) f ( g (1)) ( b ) g ( f (1)) ( c ) f ( f (1)) ( d ) g ( g (1)) ( e ) ( g ◦ f )(3) ( f ) ( f ◦ g )(6) 1. (a) 2; (b) 6; (c) 2; (d) 4; (e) 4; (f) 2 2. (a) 6; (b) 2; (c) 4; (d) 2; (e) 4; (f) 2 3. (a) 2; (b) 6; (c) 4; (d) 2; (e) 0; (f) 4. (a) 4; (b) 3; (c) 0; (d) 5; (e) 1; (f) 4 5. (a)5....
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This note was uploaded on 06/14/2011 for the course MATH 305G taught by Professor Cathy during the Spring '11 term at University of Texas.
 Spring '11
 Cathy

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