Solve the equation by the method of your choice. Simplify irrational solutions, if possible.x2 - 5x = 0
A. {5, 0}
B. {0, -5}
C. {±
}
D. 
Answer: A
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Sketch the indicated set. Describe the boundary of the set. Finally, state whether the set is open, closed or neither.{(x, y) : x2 + y2 < 4}
A. 
The boundary is the circle of center (0, 0)
and radius 2. The set is closed.
B. 
The boundary is the circle of center (0, 0)
and radius 2. The set is open.
C. 
The boundary is the circle of center (0, 0)
and radius 4. The set is closed.
D. 
The boundary is the circle of center (0, 0)
and radius 4. The set is open.
For the given measurement, briefly describe any likely sources of random error and any likely sources of systematic error.An agency wishes to determine the number of unemployed people in a town. They conduct a mini-census by delivering a survey to every household in the town, asking for information about household members. The information is entered into a computer.
What will be an ideal response?
Choose the equation that matches the graph.
A. y2 = 4x B. y2 = -4x C. -4y2 = x D. x2 = -4y
Solve by graphing. Label the axes and show where the solution is located on the graph.Alison sets aside 
each month to spend on books and CDs. If she spends c dollars on CDs in a given month she may spend b dollars on books where 
Graph the equation and use the graph to estimate the amount Alison may spend on books in March if she spends 
on CDs.
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A. $31
B. $35
C. $66
D. $24