Sketch the graph of the equation. If the graph is a parabola, find its vertex. If the graph is a circle, find its center and radius.x2 + 2x + y2 - 10y + 3 = 0
A. center (1, 5); radius = 
B. center (1, -5); radius = 
C. center (-1, 5); radius = 23
D. center (-1, 5); radius = 
Answer: D
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Heights (in inches) obtained by a group of people in a random survey is reported in the table. What is the expected height (in inches)? Please round your answer to one decimal place. HeightsProbability550.001600.022650.104700.373750.373800.104850.022900.001? __________ in ?
Fill in the blank(s) with the appropriate word(s).
Use the Principle of Mathematical Induction to show that the statement is true for all natural numbers n.1 ? 8 + 2 ? 8 + 3 ? 8 + . . . + 8n = 
What will be an ideal response?
Find the indicated term of the geometric sequence.a1 = 3, r = -2; Find a2.
A. a2 = -12 B. a2 = 12 C. a2 = -6 D. a2 = 6
Graph the inequality.x - 4y < 0
A. 
B. 
C. 
D. 