Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in the ordered pair form.
A. {(4, 1)}
B. {(5, 0)}
C. ?
D. {(-1, 4)}
Answer: A
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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 in both L and K'
A. {h, w} B. {c, n, p} C. {r, s, t} D. {c, n}
Solve the problem.Suppose that z varies jointly with x and y and that z = 343 when x = 7 and 
Find the constant of proportionality k. Then, find z when x = 7 and y = 8.
A. k = 2.9; z = 162.4
B. k = 33,614; z = 
C. k = 3.9; z = 218.4
D. k = 3.5; z = 196
Give the coordinates of the vertex and graph the equation in a window that includes the vertex.y = (x + 4)2
A. Vertex: (4, 0)
B. Vertex: (0, -4)
C. Vertex: (-4, 0)
D. Vertex: (0, 4)
Find the composite function for the given functions and state the domain. g ? f for f(x) = x3 + 4 and g(x) = 
A. x
B. 
C. x3
D. -x