Use the laws of exponents to simplify. Do not use negative exponents in the answer. Assume that even roots are of nonnegative quantities and that all denominators are nonzero.z-2/7 ? z3/7
A. z1/7
B. z7/6
C. z-1/7
D. z6/7
Answer: A
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Add or subtract as indicated.7.3 - 1.4
A. 6.26 B. 5.63 C. 7.16 D. 5.9
Solve the problem.Ron attends a cocktail party (with his graphing calculator in his pocket). He wants to limit his food intake to 147 g protein, 127 g fat, and 180 g carbohydrate. According to the health conscious hostess, the marinated mushroom caps have 3 g protein, 5 g fat, and 9 g carbohydrate; the spicy meatballs have 14 g protein, 7 g fat, and 15 g carbohydrate; and the deviled eggs have 13 g protein, 15 g fat, and 6 g carbohydrate. How many of each snack can he eat to obtain his goal?
A. 6 mushrooms; 3 meatballs; 8 eggs B. 9 mushrooms; 7 meatballs; 4 eggs C. 3 mushrooms; 8 meatballs; 6 eggs D. 8 mushrooms; 6 meatballs; 3 eggs
Use the formula for the sum of the first n terms of an arithmetic sequence.Find 
.
A. 2759 B. 2960.5 C. 2852 D. 2666
Solve the problem.On a buying trip in Los Angeles, Rosaria Perez ordered 120 pieces of jewelry: a number of bracelets at $10 each and a number of necklaces at $13 each. She wrote a check for $1320 to pay for the order. How many bracelets and how many necklaces did Rosaria purchase?
A. 75 bracelets and 45 necklaces B. 90 bracelets and 30 necklaces C. 85 bracelets and 35 necklaces D. 80 bracelets and 40 necklaces