Evaluate the expression.(1010)
A. 10
B. 3,628,800
C. 1
D. 1,814,400
Answer: C
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Solve the equation.
- 8 = -1
A. -37 B. -35 C. 35 D. 37
y? is a solution of the differential equation.
?
?
A. ?True B. ?False
Solve and graph. Write the solution in interval notation.
< 3
A. 
? 
B. 
C. (-?, 9)
D. 
Solve the problem.Three trains - one eastbound, one westbound, and one northbound - leave a city at the same time. The speed of the northbound train is 30 miles per hour greater than the speed of the eastbound train. After 3 hours, the distance between the westbound train and the eastbound train is 210 miles. Twice the speed of the westbound train is 20 miles per hour more than the speed of the northbound train. Find the speeds of the three trains.
A. eastbound, 20 mph; westbound, 50 mph; northbound, 60 mph B. eastbound, 60 mph; westbound, 40 mph; northbound, 30 mph C. eastbound, 30 mph; westbound, 40 mph; northbound, 60 mph D. eastbound, 40 mph; westbound, 40 mph; northbound, 70 mph