Graph the circle with radius r and center (h, k).r = 6; (h, k) = (4, 0) 
A. 
B. 
C. 
D. 
Answer: D
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State the phrase as a mathematical expression. Use x to represent the variable.The difference between nine times a number and eight
A. 9x - 8 B. 8 + 9x C. 8 - 9x D. 9 - x + 8
Solve using Cramer's rule. 7a- 5c = -19-7a + 4b + 4c = 39-5a - 9b= -78
A. (3, -7, -8) B. (4, 5, 8) C. (7, 8, 7) D. (3, 7, 8)
Find an equation of an ellipse satisfying the given conditions.Vertices: (-13, 0) and (13, 0); length of minor axis: 14
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve.The daily profit in dollars of a specialty cake shop is described by the function 
where x is the number of cakes prepared in one day. The maximum profit for the company occurs at the vertex of the parabola. How many cakes should be prepared per day in order to maximize profit?
A. 676 cakes B. 26 cakes C. 52 cakes D. 4056 cakes