Evaluate.-52
A. -10
B. 10
C. 25
D. -25
Answer: D
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Match the system of inequalities with the appropriate graph.x + 2y ? 2 x - y ? 0
A. 
B. 
C. 
D. 
Find all solutions to the equation.cos x = - 
A. x = 
+ 2n?, x = 
+ 2n?, for integers n
B. x = 
+ 2n?, x = 
+ 2n?, for integers n
C. x = 
+ 2n?, x = 
+ 2n?, for integers n
D. x = 
+ 2n?, x = 
+ 2n?, for integers n
Write a cost function for the problem. Assume that the relationship is linear.A cable TV company charges $28 for the basic service plus $8 for each movie channel. Let C(x) be the total cost in dollars of subscribing to cable TV, using x movie channels.
A. C(x) = 28x - 8 B. C(x) = 8x - 28 C. C(x) = 8x + 28 D. C(x) = 28x + 8
Graph the ellipse and label the center.
+ 
= 1
A. C(-2, 8)
B. C(2, 8)
C. C(2, -8)
D. C(-2, -8)