Use the vectors in the figure below to graph the following vector. 
2u - z - w 
A. 
B. 
C. 
D. 
Answer: B
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Provide an appropriate response.What form do planes perpendicular to the z-axis have in spherical coordinates?
A. ? = a cos ? B. ? = a sin ? C. ? = a csc ? D. ? = a sec ?
Solve the problem.Suppose the sales of a particular brand of appliance satisfy the relationship 
, where S(x) represents the number of sales in year x, with 
corresponding to 1982. In what year would the sales be 5250?
A. 1990 B. 1985 C. 1987 D. 1988
Provide an appropriate response.The local boys' club wants to sell cookies to raise money. They surveyed 65 area stores to determine which type of cookie they should sell to make the most money. In 11 stores chocolate fudge sandwich cookies were the biggest seller. In 6 stores the favorite was sugar wafers. In 8 stores the most popular was peanut butter cookies. In 26 stores the best seller was chocolate chip, and in 14 stores the favorite was oatmeal raisin. Which measure of central tendency should the boys' club use to make the choice?
A. Weighted mean B. Mean C. Mode D. Median
Use a graphing utility to solve the system of equations. Express the solution rounded to two decimal places.
A. x = 1.81, y = 0.28; x = 0.20, y = 2.45; x = -0.20, y = -2.45 or (1.81, 0.28), (0.20, 2.45), (-0.20, -2.45) B. x = 1.99, y = 0.13; x = 1.04, y = 1.70; x = -0.91, y = 2.95 or (1.99, 0.13), (1.04, 1.70), (-0.91, 2.95) C. No real solution exists. D. x = 1.18, y = 1.03; x = 1.07, y = 1.52; x = -0.91, y = 2.88 or (1.18, 1.03), (1.07, 1.52), (-0.91,2.88)