Solve the problem.The polynomial function I(t) = -0.1t2 + 2t represents the yearly income (or loss) from a real estate investment, where t is time in years. After what year does income begin to decline?
A. 10
B. 13.33
C. 20
D. 9
Answer: A
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Using the Divergence Theorem, find the outward flux of F across the boundary of the region D.F = 2x3i + 2y3j + 2z3k ; D: the thick sphere 16 ? x2 + y2 + z2 ? 36
A. 162,048?
B. 
?
C. 912?
D. 
?
Solve for the specified variable. Assume that all other variables are nonzero.(b - 11)y2 + 3y + 4z = 0; for y
A. y = 
B. y = 
C. y = 
D. y = 
Solve the problem. Use 3.14 as the approximate value of ? unless otherwise instructed. Round to the nearest tenth unless otherwise indicated.A grain silo is in the shape of a right circular cylinder which has a base diameter of 14 feet and a height of 18 yards. Find the volume in cubic feet and leave the answer in terms of ?.
A. 10,584? ft3 B. 882? ft3 C. 31,752? ft3 D. 2646? ft3
Combine like terms.-7y2 + 7y2
A. -7y4 B. -6y2 C. 0 D. 1