Solve the problem.Suppose a cost-benefit model is given by y = 
, where y is the cost in thousands of dollars for removing x percent of a given pollutant. Find the cost of removing 65%.
A. $3600
B. $6685
C. $2340
D. $1856
Answer: B
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Solve the system of nonlinear equations using the method you prefer.y2 + 2x2 = 13y2 - x2 = 1
A. (2, 
), (-2, 
)
B. (2, -
), (2, 
)
C. (3, 
), (3, -
), (-3, 
), (-3, -
)
D. (2, 
), (2, -
), (-2, 
), (-2, -
)
Find the absolute value of the complex number.z = 4 + 6i
A. 52
B. 2
C. 
D. 10
Answer the question.Let p be a point in the interior of ?abc with barycentric coordinates 
What is the area of ?pbc with respect to the area of ?abc?
A. 
? (area of ?abc)
B. 
? (area of ?abc)
C. 
? (area of ?abc)
D. Not enough information to determine.
Solve the problem.A manufacturer's cost is given by C = 100
+ 200, where C is the cost and n is the number of parts produced. Find the cost when 64 parts are produced.
A. $1000 B. $600 C. $400 D. $25