Express the vector as a product of its length and direction.-9i + 9j + 9k
A. 9
B. 
C. 9
D. 9( -i + j + k)
Answer: A
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Find the Jacobian 
or 
(as appropriate) using the given equations.x = 8u cos 6v, y = 8u sin 6v
A. 288u B. 384u C. 384v D. 288v
Solve.A rectangle is 4 feet longer than it is wide and has an area of 60 square feet. What are its dimensions?
A. 6 × 14 ft B. 6 × 10 ft C. 7 × 10 ft D. 10 × 14 ft
Solve the problem.The logistic growth model 
represents the proportion of the total market of a new product as it penetrates the market t years after introduction. When will the product have 70% of the market?
A. 3.76 years B. 1.27 years C. 2.76 years D. 2.27 years
Match the function with its graph.1) y = sin 2x2) y = 2 cos x3) y = 2 sin x4) y = cos 2xA)B)
?
C)D)
?
A. 1B, 2D, 3C, 4A B. 1A, 2D, 3C, 4B C. 1A, 2B, 3C, 4D D. 1A, 2C, 3D, 4B