Solve the system by graphing.
x - 
y = 5
x + 
y = 12
A. x = 4, y = -3
B. x = 3, y = 4
C. x = 4, y = 3
D. x = 3, y = 1
Answer: C
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Factor by grouping.x3 - 2x2 + 9x - 18
A. (x2 + 9)(x - 2) B. x(x2 - 2x + 9) - 18 C. (x + 9)(x2 - 2x)(x - 2) D. (x2 - 2x) + 9(x - 2)
Solve the problem. Use 3.14 for ?. Round your answer to the nearest hundredth.A one-story building is 190 ft by 340 ft. If a square patio with sides 27 ft occupies the center of the building, how much area remains for offices?
A. 1033 ft2 B. 1060 ft2 C. 952 ft2 D. 63,871 ft2
Solve the problem.An electrician is working on a project for which she will need to run straight conduit pipe for lengths of 40 feet, 70 feet, and 100 feet. She wants to precut pieces of pipe to one standard length so that she can connect the pieces to obtain the three lengths she needs. What is the longest length that she can make the precut pieces?
A. 5 ft B. 8 ft C. 12 ft D. 10 ft
Solve the problem.A decorative slate centerpiece for a kitchen island has the shape of a rectangle with a semicircular section attached at each end. The radii of the semicircles measure 
inches. The perimeter of the centerpiece is 42 inches. Write a completely factored polynomial whose values give the area of the centerpiece.
A. 
x(42 - ?x)
B. 
x(84 - ?x)
C. 
x(84 - ?x)
D. 
x(42 - ?x)