Fill in the blanks.302 = 
so 
= 30.
A. 900, 30
B. 30, 900
C. 60, 30
D. 900, 900
Answer: D
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Add.
A. 47 B. 74 C. 56 D. 65
Solve the inequality.
? 0
A. (-?, -8] or [4, ?) B. [-8, 1) or [4, ?) C. (-?, -8] or (1, 4] D. [-8, 1) or (1, 4]
Find decimal notation.56
%
A. 0.056625 B. 5662.5 C. 5.6625 D. 0.56625
Solve the problem.The average speed on a round-trip commute having a one-way distance d is given by the complex rational expression 
in which r1 and r2 are the speeds on the outgoing and return trips, respectively. Fred and Mischa both drove to campus averaging 50 miles per hour and each returned home on the same route he used going and averaged 45 miles per hour. Fred's one-way route was 5 miles longer than Mischa's. Simplify the complex rational expression and answer the question: How does Fred's overall average speed compare with Mischa's?
A. Fred's average speed is the same as Mischa's. B. Fred's average speed is higher than Mischa's. C. Not enough information is given to answer the question. D. Fred's average speed is lower than Mischa's.