Sketch the graph of the quadratic function. Identify the vertex and axis of symmetry.f(x) = (x - 3)2 - 9
A. vertex: (3, - 9)
axis of symmetry: x = 3
B. vertex: (- 3, - 9)
axis of symmetry: x = - 3
C. vertex: (3, - 9)
axis of symmetry: x = 3
D. vertex: (- 3, - 9)
axis of symmetry: x = - 3
Answer: A
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Solve the problem.The radiator in a certain make of car needs to contain 
of 40% antifreeze. The radiator now contains 
of 20% antifreeze. How many liters of this solution must be drained and replaced with 100% antifreeze to get the desired strength?
A. 25 liters B. 12.5 liters C. 20 liters D. 16.7 liters
Write an equation for the ellipse.Foci (0, ±9) and y-intercepts (0, ±15)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve the equation.
= -7
A. -7
B. 
C. No solution
D. 7
Solve the problem.A rectangle has a length of x + 2 and a width of x - 2, and has an area of 60 square units. Find the length and width of the rectangle. (A = LW)
A. width = 3 units; length = 20 units B. width = 4 units; length = 15 units C. width = 6 units; length = 10 units D. width = 5 units; length = 12 units