Solve.Within a group of n people, the number of possible handshakes, N, is given by 
How many handshakes are possible at a meeting if 28 people are present?
A. 756 handshakes
B. 364 handshakes
C. 378 handshakes
D. 406 handshakes
Answer: C
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Graph the curve whose parametric equations are given.x = 2t - 1, y = t2 + 5;-4 ? t ? 4
A. 
B. 
C. 
D. 
Solve the problem.A company is manufacturing a new digital watch and can sell all it manufactures. The revenue (in dollars) is given by 
where the production output in one day is x watches. If production is increasing at 
per day when production is 375 watches per day, find the rate of increase in revenue.
A. 
B. 
C. 
D. 
Provide an appropriate response.A catamaran is running along a course with the wind providing a constant force of 36 lb. The only other force acting on the boat is resistance as the boat moves through the water. The resisting force is numerically equal to three times the boat's speed, and the initial velocity is 1 ft/sec. What is the maximum velocity in feet per second of the boat under this wind?
A. The maximum velocity occurs when 
= 14 or v = 0 ft/sec
B. The maximum velocity occurs when 
= 0 or v = 12 ft/sec
C. The maximum velocity occurs when 
= 0 or v = 14 ft/sec
D. The maximum velocity occurs when 
= 12 or v = 0 ft/sec
Rationalize the numerator. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 