Solve the problem.Find the best buy and the unit price.Brand X 6 oz for $0.42Brand Y 8 oz for $0.64
A. Brand Y, $0.8
B. Brand X, $0.7
C. Brand Y, $0.7
D. Equal value
Answer: B
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Find curl F.F(x, y, z) = y cos(x)i + x sin(y)j - 9k
A. 0 B. x cos(y)i - y sin(x)j + (x cos(y) + y sin(x))k C. 0i + 0j + (sin(y) - cos(x))k D. (-9 - x)i + (y + 9)j + (x - y)k
Identify the figure as a line, segment, or ray. Then use the correct symbol to name the figure.
A. ray; 
B. line segment; 
C. line; 
D. line; 
Solve. Remember to insert units when writing your answer.A lumber yard is going to cut a board which is 54 m into 18 pieces of equal length. How long will each piece be?
A. 3 m B. 4 m C. 36 m D. 13 m
Solve the problem.You own a hot dog cart in your city. Your monthly profit is determined from the expression 1.50x - 75, where x represents the number of hot dogs sold each month. The number 1.50 in the expression is the profit for each hot dog. The cost of leasing the hot dog cart is the number 75 in the expression. Your profit has been fluctuating between $1700 and $2200 per month. Determine approximately between what two values your hot dog sales have to be to realize this range of profit.
A. 1183 ? x ? 1517 B. 1083 ? x ? 1416 C. 1083 ? x ? 1417 D. 1183 ? x ? 1516