Solve the problem.A rectangular horse pen is to be fenced and divided into five partitions as shown. The length of the fenced-in area is to be twice the width, and the total amount of fencing to be used is 390 feet. Find the length and width of the fenced-in area.
A. l = 41 ft, w = 39 ft
B. l = 27.9 ft, w = 14 ft
C. l = 78 ft, w = 39 ft
D. l = 86.7 ft, w = 43.3 ft
Answer: C
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Find the equation of the parabola satisfying the given conditions. The vertex is at the origin.Directrix y = 9
A. y2 = -36x
B. x2 = -36y
C. y = - 
x2
D. y2 = -9x
Find the function value.If P(x) = 6x2 - 6x, find P(5).
A. 0 B. 120 C. 150 D. 149
Find the cost of goods sold.On January 1 the inventory at Will's Records was valued at 
The company paid freight of 
during the year on its purchases of 
worth of goods. The inventory on December 31 was 
A. $242,750 B. $406,750 C. $78,000 D. $78,750
The graph of a limacon curve is given. Without using your graphing calculator, determine which equation is correct for the graph.
[-5, 5] by [-5, 5]
A. r = 2 - 3 sin ? B. r = 2 - 2 sin ? C. r = 4 - sin ? D. r = 3 - 2 sin ?