Write the interval in set-builder notation and graph the set on a number line.[9, ?)
A. {x|x ? 9}
B. {x|x ? 9}
C. {x|x > 9}
D. {x|x < 9}
Answer: A
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Solve the problem.Kim decided to do some spring cleaning. She spent 
hours cleaning her garage on Saturday. The next day she spent 
hours cleaning her basement. What was the total amount of time she spent cleaning that weekend?
A. 2
hours
B. 5
hours
C. 4 hours
D. 5 hours
Evaluate the sum. Round to the nearest hundredth if necessary.
A. 9 B. 7 C. 5 D. 14
In order to prepare her budget, Sue gathers receipts for all major expenses she has had over the last month. Round the figure to the nearest dollar.Donations to charity, $343.17
A. $344 B. $342 C. $343 D. $343.27
Solve the system of equations.x + 2y + 2z + w = -4.5x +y + z + w = -0.5
A. (w + 3.5, z - 4, -z, -w) B. (-w + 3.5, -w - 4, w, w) C. (-w + 3.5, -z - 4, z, w) D. (-w + 4, -z - 4.5, z, w)