Find the specified domain and express it in interval notation.For f(x) = 
and g(x) = 
, what is the domain of g/f ?
A. [4, 6) ? (6, ?)
B. (4, 6) ? (6, ?)
C. (4, ?)
D. [4, ?)
Answer: B
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Find the expected value.A bus arrives at a bus stop at 10 am, 10 minutes past ten, and 11.00 am. You arrive at the bus stop at random times between 10.00 am and 11.00 am every day, so all arrival times are equally likely. Find your expected waiting time for the bus.[Hint: Find the probability that you will arrive at the bus stop between 10.00 am and 10 minutes past ten and find your mean waiting time in that case. Then find the probability that you will arrive at the bus stop between 10 minutes past ten and 11.00 am and find your mean waiting time in that case.]
A. 21.7 minutes B. 15 minutes C. 22.5 minutes D. 43.3 minutes
Using divisibility tests, solve the problem.Jason bought a new bike for $678, and he plans to make equal monthly payments to pay for it. Can he pay off the bike in 3 equal payments?
A. Yes B. No
Evaluate the function for the indicated input and interpret the result.A(10, 26) where A(x, y) = 
. (A computes the average of two numbers x and y.)
A. A(10, 26) = 31 The average of two numbers 5 and 13 is 31. B. A(10, 26) = 36 The average of two numbers 10 and 26 is 36. C. A(10, 26) = 36 The average of 36 is the two numbers 10 and 26. D. A(10, 26) = 18 The average of two numbers 10 and 26 is 18.
Decide whether or not the functions are inverses of each other.f(x) = (x - 6)2, x ? 6; g(x) = 
+ 6
A. Yes B. No