Solve the problem.A graph has 25 edges. The sum of the degrees of all the vertices of this graph is
A. 25.
B. 100.
C. 75.
D. not possible to determine from the information given.
E. none of these
Answer: E
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Solve the problem.A lumber yard has fixed costs of $6,922.00 a day and variable costs of $1.00 per board-foot produced. The company gets $3.00 per board-foot sold. How many board-feet must be produced daily to break even (zero profit)?
A. 6,922 board-feet B. 1,730 board-feet C. 3,461 board-feet D. 2,307 board-feet
Find the length of an arc intercepted by a central angle ? in a circle of radius r. Round your answer to 1 decimal place.r = 16.05 cm.; ? = 
? radians
A. 67.2 cm B. 33.6 cm C. 134.5 cm D. 21.4 cm
Solve the problem.Biologists banded five out of every twenty wild ducks. What percent were banded?
A. 25% B. 75% C. 5% D. 15%
Set up an equation that can be used to solve the problem. Solve the equation and answer the question asked. Alexander and Judy are 32 miles apart on a calm lake paddling toward each other. Alexander paddles at 3 miles per hour, while Judy paddles at 6 miles per hour. How long will it take them to meet?
A. 23 hours B. 3.8 hours C. 3.6 hours D. 10.7 hours