The lists below show five agricultural crops in Alabama, Arkansas, and Louisiana.AlabamaArkansasLouisianasoybeans (s)soybeans (s)soybeans (s) peanuts (p)rice (r)sugarcane (n)corn (c)cotton (t)rice (r)hay (h)hay (h)corn (c)wheat (w)wheat (w)cotton (t)Let U be the smallest possible universal set that includes all of the crops listed, and let A, K and L be the sets of five crops in Alabama, Arkansas, and Louisiana, respectively. Find each of the following sets.The set of crops common to A, K, and L
A. {n, p, s}
B. {n, p}
C. {c, h, n, p, r, s, t, w}
D. {s}
Answer: D
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Complete the square and write the equation in standard form. Then give the center and radius of the circle and graph the equation.x2 + y2 - 12x + 2y + 21 = 0
A. (x - 6)2 + (y + 1)2 = 16
center (6, -1), r = 4
B. (x + 6)2 + (y + 1)2 = 16
center (-6, -1), r = 4
C. (x + 6)2 + (y - 1)2 = 16
center (-6, 1), r = 4
D. (x - 6)2 + (y - 1)2 = 16
center (6, 1), r = 4
Find the cofactor of the indicated element.a22
A. 15 B. -13 C. 13 D. -15
The graph of a function is given. Determine whether the function is increasing, decreasing, or constant on the given interval.(- 1, 0)
A. increasing B. constant C. decreasing
Use the product-to-sum formulas to rewrite the expression as the sum or difference of two functions.sin 7? cos 4?
A. 
cos 11? - 
cos 3?
B. 
sin 11? + 
cos 3?
C. 
sin 11? + 
sin 3?
D. sin cos 28?2