Use the graph to determine the limit visually (if it exists). Then identify another function f2(x) that
agrees with the given function at all but one point.
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A. 
B.
C.
D.
E.
Answer: A
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Simplify.5(x + 4y + 7)
A. 5x - 20y - 35 B. 5x + 20y + 7 C. 5x + 20y + 35 D. 5x + 4y + 7
Graph the function using its vertex, axis of symmetry, and intercepts.f(x) = x2 - 2x + 1 
A. vertex (1, 0)
intercepts (0, 1), (1, 0)
B. vertex (-1, 1)
intercept (0, 2)
C. vertex (1, 1)
intercept (0, 2)
D. vertex (-1, 0)
intercepts (0, 1), (-1, 0)
Use the simplex method to solve the linear programming problem.Maximizez = 4x1 + 2x2subject to:x1 + 5x2 ? 14 2x1 + 3x2 ? 12withx1 ? 0, x2 ? 0
A. Maximum is 56 when x1 = 14, x2 = 0 B. Maximum is 24 when x1 = 6, x2 = 0 C. Maximum is 12 when x1 = 6, x2 = 0 D. Maximum is 14.6 when x1 = 2.5, x2 = 2.3
The demand function for a product is given by 
, where x is the number of units and p is the price in dollars. Graph this demand function for 
, with x on the horizontal axis.
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A. ?
B. ?
C. ?
D. ?
E. ?
