Solve the problem.Suppose that certain bacteria can double their size and divide every 30 minutes. Write a recursive sequence that describes this growth where each value of n represents a 30-minute interval. Let a1 = 426 represent the initial number of bacteria present.
A. a1 = 426; an = 
an-1 for n > 1.
B. a1 = 426; an = 2 an-1 for n > 1.
C. an = 2 a1 for all values of n.
D. a1 = 426; an = 2 an+1 for n > 1.
Answer: B
Mathematics
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Graph the function.f(x) = 
A. 
B. 
C. 
D. 
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Solve. Write the answer as a mixed number in simplest form.On a recent trip, Asha drove 248 miles on 12
gallons of gasoline. How many miles per gallon did she average?
A. 20
mpg
B. 744
mpg
C. 3038 mpg
D. 
mpg
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Subtract. Write a mixed numeral for the answer.
A. 13
B. 14
C. 12
D. 13
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Find the common ratio.1, -3, 9, -27, 81, . . .
A. 3
B. - 
C. -4
D. -3
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