Solve the problem.The logistic growth model 
represents the population of a bacterium in a culture tube after t hours. When will the amount of bacteria be 740?
A. 7.4 hr
B. 1.8 hr
C. 5.58 hr
D. 11.18 hr
Answer: D
Mathematics
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Find the partial derivative of the dependent variable or function with respect to each of the independent variables.f(x, y) = x3 - 5x2y - 4xy3
A. 
= 3x2 + 2xy - 4y3; 
= -5x2 + 3xy2
B. 
= 3x2; 
= -5x2 - 12xy2
C. 
= 3x2 - 10xy - 4y3; 
= -5x2 - 12xy2
D. 
= x2 - 5xy - 4y3; 
= -5x2 - 4xy2
Mathematics
Describe the figure as completely as possible, using the properties simple, closed, polygonal curve, and polygon.
A. Simple, not closed B. Polygon C. Polygonal curve D. Simple, closed
Mathematics
Simplify.(0.6)2(-4) - 0.74
A. -1.7064 B. -3.14 C. -2.18 D. -0.0784
Mathematics
Solve.-7x + 6 + 5x = -2x + 11
A. x = 5 B. Infinite number of solutions C. x = -6 D. No solution
Mathematics