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Math 115 Recitation 5(EXAM REVIEW)

# Math 115 Recitation 5(EXAM REVIEW) - PRECALCULUS Recitation...

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PRECALCULUS – Recitation 5 (EXAM REVIEW) Practice Problems for Section 1.6 1. What quantity of a 60% acid solution should be mixed with a 30% acid solution to produce 300mL of a 50% acid solution? 2. A jeweler has 50% five rings, each weighing 18g, made of an alloy of 10% silver and 90% gold. She decides to melt down the rings and add enough silver to reduce the gold content to 75%. How much silver should she add? 3. Matt and Linda are painting a house. It takes Matt 3 hours to paint the house while it takes Linda 4 hours. How long will it take them if they work together? If Linda starts working first and after an hour, Matt arrives and they finish the job together, how long was Linda working for? 4. Wendy took a trip from Davenport to Omaha, a distance of 300 miles. She traveled part of the way by bus and part of the way by train. The average speed of the bus was 40mph and the average speed of the train was 60mph. If the total travel time was 5.5 hours, how long was Wendy on the train? Practice Problems for Section 1.7 5. Solve the nonlinear inequality . 6. Solve the nonlinear inequality Write the solution set in interval notation and graph it on a number line. Practice Problems for Section 1.8

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Math 115 Recitation 5(EXAM REVIEW) - PRECALCULUS Recitation...

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