Solve the problem.A rectangular field is to be enclosed on four sides with a fence. Fencing costs $4 per foot for two opposite sides, and $3 per foot for the other two sides. Find the dimensions of the field of area 710 ft2 that would be the cheapest to enclose.
A. 20 ft @ $4 by 35.5 ft @ $3
B. 30.8 ft @ $4 by 23.1 ft @ $3
C. 35.5 ft @ $4 by 20 ft @ $3
D. 23.1 ft @ $4 by 30.8 ft @ $3
Answer: D
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Provide an appropriate response.True or False? log102,000,000 is between 7 and 8.
A. True B. False
Find the center and radius of the circle whose graph is shown. Write the standard form of the equation of the circle.
A. r = 2; (h, k) = (-4, -2); (x - 4)2 + (y - 2)2 = 4
B. r = 
; (h, k) = (-4, -2); (x + 4)2 + (y + 2)2 = 2
C. r = 
; (h, k) = (-4, -2); (x - 4)2 + (y - 2)2 = 2
D. r = 2; (h, k) = (-4, -2); (x + 4)2 + (y + 2)2 = 4
The graph of a function f is given. Use the graph to answer the question.For what numbers x is f(x) < 0?
A. (-6, 7) B. [-10, -6), (7, 10) C. (-?, -6) D. (-6, ?)
Solve the problem.A weight attached to a spring is pulled down 5 inches below the equilibrium position. Assuming that the period of the system is 
second, determine a trigonometric model that gives the position of the weight at time t seconds.
A. y = 5cos 16?t
B. y = -5cos 8?t
C. y = 5cos 
t
D. y = -5cos 16?t