A pediatric dentist calculates that two out of three children receive fluoride treatments after they have their teeth cleaned. If his dental hygienist cleaned the teeth of 240 children during a month, how many of these received fluoride treatments?
A. 200
B. 120
C. 80
D. 160
Answer: D
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Solve the problem.If the switch is thrown open after the current in an RL circuit has built up to its steady-state value, the decaying current obeys the equation 
How long after the switch is thrown open will it take the current to fall to 
of its original value?
A. -4.60 L/R seconds B. -4.40 L/R seconds C. 1.81 L/R seconds D. 1.61 L/R seconds
Write the number using digits.two hundred six thousand, one hundred seven
A. 206,107 B. 207,106 C. 2617 D. 260,170
Find the area.
A.
| 25 cm2 |
B. 20 cm2
C. 10 cm2
D. 12.5 cm2
Solve.Ms. Losch has a piece of rope 
long that she cuts into pieces for an experiment in her first-grade class. Each piece of rope is to be 
long. How many 
long pieces of rope can she cut from the original piece of rope?
A. 31 pieces of rope B. 29 pieces of rope C. 30 pieces of rope D. 2 pieces of rope