Solve the problem.Suppose a cost-benefit model is given by 
where y is the cost in thousands of dollars for removing x percent of a given pollutant. Find the cost of removing 95% to the nearest dollar.
A. $6800
B. $129,199
C. $6460
D. $18,999
Answer: B
Mathematics
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Solve the problem.A wheel with radius 2 m rolls at 13 rad/s. How fast is a point on the rim of the wheel rising when the point is 
radians above the horizontal (and rising)? (Round your answer to one decimal place.)
A. 26.0 m/s B. 52.0 m/s C. 13.0 m/s D. 6.5 m/s
Mathematics
Find the curvature of the space curve.r(t) = ti + (sinh t)j + (cosh t)k
A. ? = sinh2 t
B. ? = cosh2 t
C. ? = 
D. ? = 
Mathematics
Solve.Solve: |8x + 5| - 9 = 0
A. ?
B. 
C. 
D. 
Mathematics
Graph the ellipse. Give the coordinates of the center, as well as the values of a and b.(x + 2)2 + 
= 1
A. center (-2, 1), a = 4, b = 1
B. center (1, -2), a = 4, b = 1
C. center (-2, 1), a = 1, b = 4
D. center (-2, 1), a = 1, b = 4
Mathematics