Solve the problem.A washer is made by removing a circular disk from the center of another circular disk of radius 4 mi. If the disk that is removed has radius x, write a completely factored polynomial whose values give the area of the washer.
A. ?(8 - x)2
B. ?(8 - x)(8 + x)
C. ?(4 - x)(4 + x)
D. ?(4 - x)2
Answer: C
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Solve the problem by integration.The force F (in N) applied by a stamping machine in making a certain computer part is 
where x is the distance (in cm) through which the force acts. Find the work done by the force from 
to 
A. 0.195 N? cm B. 13.5685 N? cm C. 0.0121 N? cm D. 0.0725 N? cm
Find the unpaid balance at the end of the month for the account. UnpaidBalance atFinance
May?$545.40$309.92$18.06$175.00Finance rate is 1.5% on the unpaid balance.
A. $125.04 B. $688.50 C. $670.44 D. $706.56
Find an equation of the ellipse.An ellipse with center at (6, 3), a = 6, b = 4, and major axis horizontal
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve the problem. Be sure to make a diagram of the situation with all the given information labeled.
?
A boat travels on a course of bearing 
for 77.6 miles. How many miles north and how many miles west has the boat traveled? Round your answers to the nearest tenth of a mile.
?
A. 62.3 mi N, 44.9 mi W B. 61.8 mi N, 46.2 mi W C. 63.3 mi N, 42.6 mi W D. 62.3 mi N, 42.6 mi W E. 63.3 mi N, 44.9 mi W