Does the problem involve permutations or combinations? Do not solve.In a student government election, 5 seniors, 2 juniors, and 
sophomores are running for election. Students elect four at-large senators. In how many ways can this be done?
A. permutations
B. combinations
Answer: B
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Provide an appropriate response. Solve for x by completing the square: x2 + 6x = 30
A. 13, 10 B. 1.62, 4.62 C. 3.24, -9.24 D. 6.49, 3.49
Two cars start moving from the same point. One travels south at 70 mi/h and the other travels west at 20 mi/h. At what rate is the distance between the cars increasing 2 hours later? Round the result to the nearest hundredth.
What will be an ideal response?
Find the probability of the event.If 7 coins are flipped, what is the probability of getting 3 or more heads?
A. 
B. 
C. 
D. 
The life expectancy of white females can be estimated by using the function 
, where x is the current age. Find the life expectancy of a white female who is currently 37 years old. Round to one decimal place.
?
A. 94.2 years B. 81.5 years C. 90.3 years D. 84.9 years E. 86.4 years