Express the following in interval notation.
A. (-6, -2]
B. (2, 6]
C. [-6, -2)
D. [2, 6)
Answer: D
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Find the perimeter.
A. 90 m B. 81 m C. 57 m D. 114 m
Give the center and radius of the circle described by the equation and graph the equation.(x + 2)2 + (y + 4)2 = 25
A. center (- 2, 4), r = 5
B. center (- 2, - 4), r = 5
C. center (2, - 4), r = 5
D. center (2, 4), r = 5
Solve.In an advertisement, two digital cameras offer the same features and quality. Digital camera A is reduced 20% from the original price of $650, and the manufacturer gives a discount of $40. Digital camera B is reduced 15% from the original price of 
and the manufacturer gives a discount of 
Which digital camera is a better deal?
A. A sale price: $480 B sale price: $472.50 (better buy) B. A sale price: $552.50 B sale price: $520 (better buy) C. A sale price: $560 (better buy) B sale price: $632.50 D. A sale price: $472.50 (better buy) B sale price: $480
Solve the system of nonlinear equations using the method of elimination.
A. (5, -6), (5, 6) B. (5, 6), (6, 5), (-5, -6), (-6, -5) C. (5, 6), (-5, 6), (5, -6), (-5, -6) D. (-5, -6), (-6, -5)