Solve the problem.On a buying trip in Los Angeles, Rosaria Perez ordered 120 pieces of jewelry: a number of bracelets at $6 each and a number of necklaces at $13 each. She wrote a check for $1420 to pay for the order. How many bracelets and how many necklaces did Rosaria purchase?
A. 30 bracelets and 90 necklaces
B. 15 bracelets and 105 necklaces
C. 25 bracelets and 95 necklaces
D. 20 bracelets and 100 necklaces
Answer: D
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Determine the order of integration and then evaluate the integral.
A. 8 sin 2 B. 8 cos 2 C. 2 sin 8 D. 2 cos 8
Write the basic solution for the simplex tableau determined by setting the nonbasic variables equal to 0. 
A. x1 = 0, x2 = 0, x3 = 18, x4 = 0, x5 = 25, z = 19 B. x1 = 25, x2 = 0, x3 = 18, x4 = 0, x5 = 0, z = 19 C. x1 = 0, x2 = 0, x3 = 25, x4 = 0, x5 = 18, z = 19 D. x1 = 25, x2 = 0, x3 = 0, x4 = 0, x5 = 18, z = 19
A card is drawn randomly from a standard 52-card deck. Find the probability of the specified event. The card is a diamond picture card (the jack, queen, or king of diamonds).
A. 
B. 
C. 
D. 
Add or subtract.-6
- 7
A. -9
B. 9
C. -33
D. 33