Solve the system of equations by the substitution method. Check your solutions. For any dependent equations, write your answer in ordered pair form.

A. {(1, 0)}
B. {(0, 0)}
C. {(1, 1)}
D. {(0, 1)}


Answer: D

Mathematics

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Determine the symmetries of the curve.r2 = 3 cos 3?

A. x-axis only B. Origin only C. y-axis only D. x-axis, y-axis, origin

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Use point plotting to graph the plane curve described by the given parametric equations.x = 3t, y = t + 3; -2 ? t ? 3

A.

B.

C.

D.

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Determine whether the statement is true or false. If it is true, explain why it is true. If it is false, give an example to show why it is false.

?
If  is increasing on , then  for each  in .
?

A. False. For example,  

 increasing on any  but 


B. True. This follows from the definition.
C. False. For example, 

 increasing on  but 


Mathematics

Provide an appropriate response.A markup based on cost is generally used by retailers.

A. True B. False

Mathematics