Solve. Write the fraction in simplest form.There are 100 centimeters in 1 meter. What fraction of a meter is 76 centimeters?
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.The disk (x - 5)2 + y2 ? 1 is revolved about the y-axis to generate a torus. Find its volume. (Hint: 
= 
?, since it is the area of a semicircle of radius 1.)
A. 5?2
B. 5?
C. 10?2
D. 
?2
Solve the problem.A video rental company charges $5 for the first day, and $4 for each additional day, for renting video tape. Use the greatest integer function and write an expression for renting a video tape for x days.
A. y + 5 = 4
B. y = 
C. y = 4
+ 5
D. y = 4x + 5
Find the foci and asymptotes of the hyperbola.
- 
= 1
A. (-25, 0), (25, 0); y = 
x, y = - 
x
B. (-25, 0), (25, 0); y = 
x, y = - 
x
C. (0, -20), (0, 20); y = 
x, y = - 
x
D. (0, -20), (0, 20); y = 
x, y = - 
x
Solve the variation problem.The amount of time it takes a swimmer to swim a race is inversely proportional to the average speed of the swimmer. A swimmer finishes a race in 25 seconds with an average speed of 6 feet per second. Find the average speed of the swimmer if it takes 37.5 seconds to finish the race.
A. 5 feet per second B. 3 feet per second C. 6 feet per second D. 4 feet per second