Solve the problem.Suppose that the number of bacteria in a culture after x hours is given by 
. How many bacteria are in the culture after 8 hours?
A. 5477 bacteria
B. 2,250,000 bacteria
C. 3 bacteria
D. 18,000 bacteria
Answer: A
Mathematics
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Solve the problem.The speed limit in many neighborhoods is 35 miles per hour. How many kilometers per hour is this?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Write the shaded area in the figure as a mixed number and as an improper fraction.
A. 4
; 
B. 1
; 
C. 2
; 
D. 1
; 
Mathematics
Use the power rules for exponents to simplify. Write the answer in exponential form.(-4x6y3)2
A. 16x8y5 B. -4x8y5 C. -4x12y6 D. 16x12y6
Mathematics
Solve using elimination.
A. x = -2, y = 0; x = -2, y = 2 or (-2, 0), (-2, 2) B. x = 2, y = 2; x = -2, y = 2 or (2, 2), (-2, 2) C. x = 2, y = 0; x = 2, y = 2 or (2, 0), (2, 2) D. x = 2, y = 0; x = -2, y = 0 or (2, 0), (-2, 0)
Mathematics