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 630?
A. 4.88 hours
B. 7.67 hours
C. 2.02 hours
D. 10.53 hours
Answer: D
Mathematics
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Name the property used to go from step to step indicated by an a), b), c), or d).
What will be an ideal response?
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Solve the equation.
(x - 5) + 
(x + 2) = x + 1
A. ? B. {6} C. {-6} D. {all real numbers}
Mathematics
Decide whether the composite functions, f ? g and g ? f, are equal to x.f(x) = 
, g(x) = x
A. Yes, no B. Yes, yes C. No, no D. No, yes
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Divide.
A. 3r9 - 5r6 B. 3r8 - 5r5 C. 24r7 - 40r4 D. 3r7 - 5r4
Mathematics