Solve the problem.Between 7:00 AM and 8:00 AM, trains arrive at a subway station at a rate of 10 trains per hour 
per minute). The following formula from statistics can be used to determine the probability that a train will arrive within t minutes of 7:00 AM. F(t) = 1 - e-0.17tDetermine how many minutes are needed for the probability to reach 30%.
A. 2.10 min
B. 7.85 min
C. 5.96 min
D. 3.18 min
Answer: A
Mathematics
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Perform the indicated operation. Assume that all variables are nonnegative.6
- 11
+ 2
A. 7
B. 3
C. -7
D. -3
Mathematics
Find the Taylor polynomial of order 3 generated by f at a.f(x) = x2 + x + 1, a = 4
A. P3(x) = 5 + 9(x - 4) + 13(x - 4)2 B. P3(x) = 21 + 9(x - 4) + 9(x - 4)2 + 21(x - 4)3 C. P3(x) = 1 + 3(x - 4) + 3(x - 4)2 + (x - 4)3 D. P3(x) = 21 + 9(x - 4) + (x - 4)2
Mathematics
Solve the problem.Write 48 out of 50 computer chips as a reduced fraction and as a percent.
A. 
, 960%
B. 
, 96%
C. 
, 960%
D. 
, 9.6%
Mathematics
Find the LCD for the given rational expressions.
, 
A. 24x2y3 B. 24x3y2 C. 24x5y3 D. 192x5y3
Mathematics