Simplify the fraction.
A. 
B. 
C. 
D. 
Answer: D
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Use the substitution formula to evaluate the integral.
A. 
B. 18
C. 
D. 6
Solve the problem.A 14-kilometer roadway under construction is being completed at a pace of one-tenth of its length per week. After 6 weeks, how many meters remain to be completed?
A. 5.6 m B. 56 m C. 5600 m D. 560 m
Solve.A barge takes 4 hours to move (at a constant rate) downstream for 40 miles, helped by a current of 3 miles per hour. If the barge's engines are set at the same pace, find the time of its return trip against the current.
A. 80 hours B. 4 hours C. 10 hours D. 7 hours
Find an equation in standard form for the ellipse that satisfies the given conditions.The vertical major axis is of length 18, and the minor axis is of length 6.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1