Solve the problem.Suppose the cost per ton, f(x), to build an oil platform of x thousand tons is approximated by 
What is the cost per ton for x = 20?
A. $15,625.00
B. $15,000.00
C. $25.00
D. $484.50
Answer: D
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Solve the problem.Find the centroid of the region cut from the fourth quadrant by the circle x2 + y2 = 4.
A. 
= 
, 
= - 
B. 
= 
, 
= - 
C. 
= - 
, 
= 
D. 
= 
, 
= - 
Find all real numbers that satisfy the equation.sin x = 0
A. {x|x = 0 + k?}
B. 
C. 
D. {x|x = 0 + 2k?}
Solve the application and answer with a complete sentence.A sports club is attended by adults in the ratio of 4 women for every 7 men. A total of 497 men attended the club yesterday. How many women attended?
A. 265 women attended. B. 501 women attended. C. 420 women attended. D. 284 women attended.
Use dimensional analysis to solve the problem.A defendant in a collision case claims that he was traveling at 42 mi/hr (which happens to be under the speed limit) around a blind curve and did not have time to swerve to miss rear-ending the plaintiff, who had just pulled into the road. The investigating officer determines that any speed less than 60 ft/sec would have allowed time to brake or swerve to avoid the collision. How would you judge the defendant? Explain.
A. Guilty. The defendant was traveling about 62 ft/sec. B. Not guilty. The defendant was traveling 51 ft/sec.