Solve the problem.Find the consumers' surplus if the demand for an item is given by 
assuming supply and demand are in equilibrium at 
A. 144
B. 216
C. 72
D. 432
Answer: A
Mathematics
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Express the vector as a product of its length and direction.4j - 3k
A. 5
B. 5(j - k)
C. 5
D. 25
Mathematics
Solve the problem.The floor of a rectangular room is to be tiled with 
foot square tiles along a 9
foot wall. How many tiles will be needed along the wall?
A. 3
tiles
B. 28
tiles
C. 30 tiles
D. 27
tiles
Mathematics
Solve the problem.The intelligence quotient in psychology is given by Q(m, c) = 100 ? 
, where m is a person's mental age, and c is his or her chronological , or actual, age. Find Q(16, 12) and round the answer to the nearest whole number.
A. 100 B. 75 C. 13 D. 133
Mathematics
Use the graph to complete the identity.cos 3x cos 
x + sin 3x sin 
x = ? 
A. y = sin y = cos 
x
B. y = cos 
x
C. y = sin y = cos 
x
D. y = cos y = cos 
x
Mathematics