Solve the problem.Five friends drove at an average rate of 60 miles per hour to a weekend retreat. On the way home, they took the same route but averaged 65 miles per hour. What was the distance between home and the retreat if the round trip took 10 hours?
A. 624 mi
B. 7800 mi
C. 312 mi
D. 5
mi
Answer: C
Mathematics
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Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.4 B. 3 C. 0.04 D. 0.08
Mathematics
Solve the problem.Find two complex numbers whose sum is 14 and whose product is 72.
A. 7 + 23i and 7 - 23i
B. 7 + i
and 7 - i
C. 
+ 7i and 
- 7i
D. 7 + 
i and 7 - 
i
Mathematics
Determine whether the collection is well-defined.The collection of people who wear expensive clothes.
A. Not well-defined B. Well-defined
Mathematics
Solve the equation.10n - 4 = 36
A. 30 B. 34 C. 7 D. 4
Mathematics