PracticeTEst3 - ) ( x f 2 4. (10 pts.) Divide. Remember to...

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PRACTICE TEST 3 Show All Work!!! 1. (10 pts.) A racer is bicycling 15 km/hr faster than a person on a mountain bike. In the time it takes the racer to travel 80 km, the person on the mountain bike has gone 50 miles. Find the speed of each bicyclist. Write your answer in a sentence! 1. (10 pts.) Derek can clean the yard in 9 hours. I can clean the same yard in 12 hours. How long would it take us, working together, to clean the yard? Write your answer in a sentence, using HOURS AND MINUTES!!! 1
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2. (15 pts.) A rocket is launched from a rooftop with an upward velocity of 48 ft/sec. The height, in feet, of the rocket, t seconds after having been launched from a 160-ft. high rooftop is given by: 160 48 16 ) ( 2 + + - = t t t h . a. After how long will the rocket reach the ground? Write your answer in a sentence! b. After how long will the rocket be 96 feet above the ground? Write your answer in a sentence! 3. (5 pts.) If 1 1 ) ( 2 - + = x x x f , find the domain of
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Unformatted text preview: ) ( x f 2 4. (10 pts.) Divide. Remember to simplify your answer as much as possible: x x x x x x x x 20 9 3 5 2 5 27 2 3 2 2 3 3 + +-+ + + 5. (10 pts.) Divide. Write your quotient below (make your answer clear!): ) 3 ( ) 3 3 ( 2 5--+-x x x x Quotient: 3 6. (10 pts.) Find the value of x : 7. (10 pts.) Simplify (you should have one simplified fraction as your answer): 2 1 5 3 2 a ab b a + + 4 8. (10 pts.) Find all values of x such that ) ( ) ( x g x f = , if 2 3 3 ) ( +--= x x x x x f and 6 5 ) ( 2--= x x x g 10. (10 pts.) Subtract and, if possible, simplify: 2 2 4 y x xy y x y x---+ (5 pts.) Extra Credit: One summer, Hans mowed 4 lawns for every 3 lawns mowed by his brother Franz. Together, they mowed 98 lawns. How many lawns did each mow? Show all work in order to get full credit. Guessing will get you NO points. (You can do this problem on the back) 5...
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This note was uploaded on 04/12/2011 for the course MTH 112 taught by Professor Williamson during the Spring '10 term at Grand Valley State University.

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PracticeTEst3 - ) ( x f 2 4. (10 pts.) Divide. Remember to...

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