Rationalize the denominator. Assume that all variables represent non-negative real numbers. Make sure you simplify the final answer.
A. 
B. 
C. 6
D. 
Answer: A
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Solve the equation for the specified variable.I = Prt; solve for t
A. t = 
B. t = 
C. t = 
D. t = P - Ir
The ? shape in the figure below is shown using 9 pixels in a 3 × 3 grid. The color levels are given to the right of the figure. Use the matrix 
that represents a digital photograph of the ? shape to solve the problem.
Adjust the contrast by changing the black to light grey and the light grey to black. Use matrix addition to accomplish this.
A. 
+ 
= 
B. 
+ 
= 
C. 
+ 
= 
D. 
+ 
= 
Sketch the graph of the quadratic function. Give the vertex and axis of symmetry.y + 9 = (x + 1)2
A. vertex: (1, - 9)
axis of symmetry: x = 1
B. vertex: (- 1, - 9)
axis of symmetry: x = - 1
C. vertex: (- 1, - 9)
axis of symmetry: x = - 1
D. vertex: (- 1, - 9)
axis of symmetry: x = - 1
Find the equation of the axis of symmetry of the parabola.y = 4x2 - 32x + 65
A. x = 1 B. x = -1 C. x = 4 D. x = -4