Solve the inequality: 
A. 
B. 
C. 
D. 
E. 
Answer: D
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Provide an appropriate response.You are late for work. You have two options for getting to work. You may take the bus which takes on average 40 minutes with a standard deviation of 12 minutes. Or you can cycle which takes on average 50 minutes with a standard deviation of 2 minutes. Compare these two distributions.You leave your house at 8.20 am and are supposed to start work at 9.00 am. Which option would you choose if you will be fired if you are even a few minutes late? Which option would you choose if you know that up to 15 minutes late is OK but after that there is trouble? Explain your thinking.
What will be an ideal response?
Determine where the given function is concave up and where it is concave down. f(x) = x3 - 3x2 + 2x + 15
A. Concave down on (-?, -1), concave up on (-1, ?) B. Concave down on (-?, 1), concave up on (1, ?) C. Concave up on (-?, 1), concave down on (1, ?) D. Concave up on (-?, -1), concave down on (-1, ?)
Add. -7 + 7
A. -7 B. 7 C. 14 D. 0
Find the product.-7x4(3x6 + 6x2)
A. -21x10 - 42x6 B. -21x10 + 6x2 C. -21x10 + 42x6 D. -21x2 - 42x