Simplify. Include the absolute value symbol if necessary. If the answer is not a real number, state so.
A. 27
B. 81
C. not a real number
D. 9
Answer: D
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If possible, simplify the expression. If any variables exist, assume that they are positive.
- 
+ 
A. 
B. 
C. - 
D. 
Solve the application.You are varnishing the background for a rectangular mural. The length of the mural is 5
meters and the width of the mural is 3 meters. If one can of varnish will cover 10 m2 of surface, how many cans of varnish must be purchased to cover the entire background? (Use A = lw, where A is the area, l is the length, and w is the width.)
A. 17 cans of varnish B. 2 cans of varnish C. 4 cans of varnish D. 7 cans of varnish
Solve using the elimination method. If the system has no solution or an infinite number of solutions, state this.-4x + 2y = 120x - 10y = -5
A. 
B. 
C. No solution
D. Infinite number of solutions
Graph the ellipse.4x2 + 49y2 = 196
A. 
B. 
C. 
D. 