Simplify the difference quotients 
and 
for the following function. Rationalize the numerator when necessary.f(x) = 
A. 
; 
B. - 
; - 
C. 
; 
D. - 
; - 
Answer: A
Mathematics
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Find the area of the specified region.Shared by the circles r = 9 cos ? and r = 9 sin ?
A. 
(2 - 
)
B. 
?
C. 
(4? - 3
)
D. 
(? - 2)
Mathematics
Solve the problem.There are 3 cards in a hat; one is a king, one is a queen, and one is an ace. Two cards are to be selected at random without replacement. Using a tree diagram , obtain the sample space for the experiment. Then, find the probability that a king and a queen are selected.
A. 
B. 0
C. 
D. 
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Identify the set as finite or infinite.{6, 7, 8, . . ., 11}
A. finite B. infinite
Mathematics
Factor the expression completely.
?
?
A. 
B. 
C. 
D. The expression is prime.
Mathematics