Solve the problem.On a buying trip in Los Angeles, Rosaria Perez ordered 120 pieces of jewelry: a number of bracelets at $11 each and a number of necklaces at $15 each. She wrote a check for $1640 to pay for the order. How many bracelets and how many necklaces did Rosaria purchase?
A. 35 bracelets and 85 necklaces
B. 40 bracelets and 80 necklaces
C. 50 bracelets and 70 necklaces
D. 45 bracelets and 75 necklaces
Answer: B
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Answer the following statement true (T) or false (F)
Solve the problem.Sketch a graph that depicts the amount of water in a 50-gallon tank. The tank is initially full, And then a pump is used to take water out of the tank at a rate of 5 gallons per minute. This pump is turned off after 6 minutes and at that same time a different pump is turned on. This second pump puts water into the tank at a rate of 4 gallons per minute for 4 minutes.
A. 
B. 
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Complete.1800 sec = ___ hr
A. 5 B. 30 C. 3 D. 0.5