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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 Spring '08
 PLOTKIN
 Math, Calculus

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