Find the center and radius of the circle.x2 + (y + 4)2 = 121
A. Center: (4, 0); radius: 121
B. Center: (0, -4); radius: 11
C. Center: (-4, 0); radius: 11
D. Center: (0, -4); radius: 121
Answer: B
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Without using a calculator, determine the system of inequalities needed for the calculator-generated graph.
A. y ? 0 x2 + y2 ? 16 B. y ? 0 x2 + y2 ? 16 C. y ? 0 x2 + y2 ? 16 D. y ? 0 x2 + y2 ? 16
Write the equation in vertex form. Identify the vertex.y = x2 + 5x + 2
A. y = (x + 5)2 - 23; (-5, 23)
B. y = (x + 5)2 - 23; (5, 23)
C. y = 
2 - 
; 
D. y = 
2 - 
; 
Find the inverse of A if it has one, or state that the inverse does not exist.A = 
A. 
B. 
C. Inverse does not exist
D. 
Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are positive.(25x6y4)1/2
A. 5x6y2 B. x3y2 C. 5x3y2 D. 5x3y