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Stitz-Zeager_College_Algebra_e-book

# 2 we let p n be the formula z n z n the base case p

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Unformatted text preview: a 3 mile race at the same time. If Mike ran the race at 6 miles per hour and ﬁnishes the race 10 minutes before Carl, how fast does Carl run? 4. On a certain day, Donnie observes the wind is blowing at 6 miles per hour. A unladen swallow nesting near Donnie’s house ﬂies three quarters of a mile down the road (in the direction of the wind), turns around, and returns exactly 4 minutes later. What is the airspeed of the unladen swallow? (Here, ‘airspeed’ is the speed the swallow can ﬂy in still air.) 5. In order remove water from a ﬂooded basement, two pumps, each rated at 40 gallons per minute, are used. After half an hour, the one pump burns out, and the second pump ﬁnishes removing the water half an hour later. How many gallons of water were removed from the basement? 6. A faucet can ﬁll a sink in 5 minutes while a drain will empty the same sink in 8 minutes. If the faucet is turned on and the drain is left open, how long will it take to ﬁll the sink? 7. Working together, Daniel and Donnie can clean the l...
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