Use the rules for exponents to rewrite the expression and then evaluate the new expression. 

A. -14
B. -5
C. 0
D. 1


Answer: D

Mathematics

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Complete the ordered pairs. Then graph the equation.2x - y = 2(0, ), ( , 0), (2, )

A. (0, -2), (1, 0), (2, 2)

B. (0, 2), (-1, 0), (2, 6)

C. (0, -2), (-4, 0), (2, -1)

D. (0, -2), (-1, 0), (2, -6)

Mathematics

Provide an appropriate response.Using a graphing calculator, choose the inequality that corresponds to the graph:

A. y ? x2 - 2x B. y ? x2 - 2x C. y > x2 - 2x D. y < x2 - 2x

Mathematics

Solve the problem.A loaf of bread is removed from an oven at  and cooled in a room whose temperature is . If the bread cools to  in 20 minutes, how much longer will it take the bread to cool to 

A. 18 min B. 6 min C. 26 min D. 7 min

Mathematics

State the dual problem. Use y1, y2,  y3 and y4 as the variables. Given: y1 ? 0, y2 ? 0,  y3 ? 0, and y4Minimizew = 2x1 + 3x2 + x3subject to:x1 + 3x2 + 2x3 ? 35 2x1 + 4x2 + 3x3 ? 50 x1 ? 0, x2 ? 0, x3 ? 0

A. Maximize z = 50y1 + 35y2

subject to:2y1 + y2 ? 2
 4y1 + 3y2 ? 3
 3y1 + 2y2 ? 1
B.
Maximizez = 35y1 + 50y2
subject to:y1 + 2y2 ? 2
 3y1 + 4y2 ? 3
 2y1 + 3y2 ? 1
C. Maximize z = 50y1 + 35y2
subject to:2y1 + y2 ? 2
 4y1 + 3y2 ? 3
 3y1 + 2y2 ? 1
D.
Maximizez = 35y1 + 50y2
subject to:y1 + 2y2 ? 2
 3y1 + 4y2 ? 3
 2y1 + 3y2 ? 1

Mathematics