Solve the problem.The formula for converting Celsius temperature, C, to Fahrenheit temperature, F, is 
If Fahrenheit temperature ranges from 131° to 248°, inclusive, what is the range for the Celsius temperature?
A. [268°C, 478°C]
B. [55°C, 120°C]
C. (268°C, 478°C)
D. (55°C, 120°C)
Answer: B
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Find the volume of the described solid.The base of a solid is the region between the curve y = 6cos x and the x-axis from x = 0 to x = ?/2. The cross sections perpendicular to the x-axis are isosceles right triangles with one leg on the base of the solid.
A. 
?
B. 3?
C. 
?
D. 9?
Use the point-slope form to write an equation of the line passing through the two given points. Write your final answer in standard form .(-7, 3), (-25, 0)
A. 6x - 6y = -25 B. x - 6y = -25 C. x - 6y = -60 D. x - 6y = 25
Eliminate the parameter t. Find a rectangular equation for the plane curve defined by the parametric equations.x = 2 + sec t, y = 5 + 2 tan t; 0 < t < 
A. (x - 2)2 + 
= 1; 1 ? x ? 3
B. (y - 2)2 - 
= 1; -? < x < ?
C. (x - 2)2 - 
= 1; x > 3
D. (x - 2)2 - (y - 5)2 = 4; -? < x < ?
Solve the problem involving consecutive integers.In a recent International Gymnastics competition, the U.S., China, and Romania were the big winners. If the total number of medals won by each team are three consecutive integers whose sum is 69 and the U.S. won more than China who won more than Romania, how many medals did each team win?
A. U.S.: 25 medals; China: 24 medals; Romania: 23 medals B. U.S.: 71 medals; China: 70 medals; Romania: 69 medals C. U.S.: 24 medals; China: 23 medals; Romania: 22 medals D. U.S.: 22 medals; China: 21 medals; Romania: 20 medals