Find a rectangular equation equivalent to the given pair of parametric equations.x = 2 + sec t, y = 5 + 2 tan t; 0 < t < 
A. (x - 2)2 - = 1; x > 3
B. (x - 2)2 + = 1; 1 ? x ? 3
C. (x - 2)2 - (y - 5)2 = 4; -? < x < ?
D. (y - 2)2 - = 1; -? < x < ?
Answer: A
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Solve the problem.A rectangular sea aquarium observation window is 12.0 ft wide and 4.00 ft high. What is the force on this window if the upper edge is 5.00 ft below the surface of the water. The density of seawater is 64.0 lb/ft3.
A. 31,100 lb B. 21,500 lb C. 43,000 lb D. 25,000 lb
Find the first term and the common difference for the arithmetic sequence.a13= 79, a33= 219
A. a1= -5, d = 140 B. a1= 140, d = 7 C. a1= 140, d = -5 D. a1= -5, d = 7
Solve the inequality.-7x - 8 ? -8x - 13
A. (-7, ?)
B. [-5, ?)
C. (-?, -5]
D. (-?, -7)
The following table shows the approximate value V of one Euro in U.S, dollars from its introduction in January 2003 to January 2006. (t = 3 represents January, 2003.) ? t (Year) 3 4 6 V (Value in $) 1.00 1.25 1.21 ? Which model would best fit the given data? (A, a, b, c, k, l, and m are constants.) ?
A. Exponential:
B. Linear:
C. Cubic:
D. Quadratic:
E. Logarithmic: