Solve the problem.The number of bacteria growing in an incubation culture increases with time according to 
where x is time in days. After how many days will the number of bacteria in the culture be 4,687,500?(Hint: Let B(x) = 4,687,500.)
A. 10 days
B. 6 days
C. 4 days
D. 1 day
Answer: C
Mathematics
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Solve the problem. Round to the nearest hundredth, if necessary.Assume that the mean length of a human pregnancy is 268 days with a standard deviation of 9 days. What percentage of human pregnancies do we expect to last no more than 279 days?
A. 58.71% B. 88.88% C. 88.49% D. 89.07%
Mathematics
Find the indicated derivative.Find y(4) if y = 5 sin x.
A. y(4) = - 5 sin x B. y(4) = 5 cos x C. y(4) = - 5 cos x D. y(4) = 5 sin x
Mathematics
Solve the equation.log x + log (x -1) = log 90
A. x = -9
B. x = 10, x = -9
C. x = 
D. x = 10
Mathematics
Solve the equation.(6 - x)(8 + x) = 0
A. -8, -6 B. -6, 8 C. -8, 6 D. 8, 6
Mathematics