Find the center of the ellipse.
+ 
= 1
A. (3, 2)
B. (-3, -2)
C. (-2, -3)
D. (2, 3)
Answer: C
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Solve the problem.The combined SAT scores of the freshman class at a particular university are normally distributed with a mean of 1000 and a standard deviation of 100. What percentage of the freshmen class had combined SAT scores above 1110?
Fill in the blank(s) with the appropriate word(s).
Use algebraic and/or graphical methods to solve the inequality.(x + 4)(x - 4)2 > 0
A. x > -4 B. -4 < x < -4 or x > -4 C. All real numbers D. -4 < x < 4 or x > 4
Solve the problem.It costs $900 to start up a business of selling hot dogs. Each hot dog costs 
to produce. Let y be the cost in dollars of producing x hot dogs. Write the cost equation.
A. y = .55x - 900 B. y = .55x + 900 C. y = 900x + .55 D. y = 55x + 900
Use a graphing calculator to solve the linear equation.Rewrite the equation so that one side is 0, then replace 0 with y. The graph of the equation for y is shown. Use the graph to determine the solution of the equation.3x + 1 + x = 2x - 3
A. y = 2x + 4; 0 B. y = 4x + 2; -2 C. y = 2x + 4; -2 D. y = 4x + 2; 0