Solve the problem.One hundred rats are being trained to run through a maze and are rewarded when they run through it correctly. Once a rat successfully runs the maze, it continues to run the maze correctly in all subsequent trials. The number of rats that run the maze incorrectly after t attempts is given approximately by 
Find the number of trials required such that only 45% of the rats are running the maze incorrectly. Round to the nearest trial.
A. 6 trials
B. 23 trials
C. 5 trials
D. 27 trials
Answer: A
Mathematics
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L'Hopital's rule does not help with the given limit. Find the limit some other way.
A. 1
B. 
C. 
D. 0
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Evaluate the expression.[[-18]]
A. -19 B. -17 C. -18 D. 18
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Simplify the ratio.2.25 to 0.5
A. 
B. 
C. 
D. 
Mathematics
If possible, factor the polynomial completely. If a polynomial cannot be factored, state that it is prime.-30x3 + 57x2 + 45x
A. -3(2x2 - 5)(5x + 3) B. x(2x - 5)(-15x - 9) C. -3x(2x - 5)(5x + 3) D. x(-6x + 15)(5x + 3)
Mathematics