Solve.Julie and Eric row their boat (at a constant speed) 32 miles downstream for 4 hours, helped by the current. Rowing at the same rate, the trip back against the current takes 8 hours. Find the rate of the current.
A. 1.5 mph
B. 3 mph
C. 6 mph
D. 2 mph
Answer: D
Mathematics
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Compute the difference. Express answer in simplest form.
- 
A. 
B. 
C. 
D. 
Mathematics
Find the directrices of the hyperbola.x2 - y2 = 16
A. x = ± 
B. x = ± 
C. y = ± 4
D. y = ± 
Mathematics
Solve the problem. Round money amounts to the nearest cent.A jug of wine contains 16 L. How many 400 mL servings are in one jug?
A. 6400 servings B. 4 servings C. 40 servings D. 400 servings
Mathematics
Solve the problem.A hot dog stand sells hot dogs with cheese, relish, chili, tomato, onion, mustard, or ketchup. How many different hot dogs can be concocted using any 3 of the extras?
A. 840 B. 105 C. 210 D. 35
Mathematics