Find the domain of the rational expression.f(x) = 
A. {x|x is a real number and x ? 0, x ? -4}
B. {x|x is a real number and x ? 0}
C. {x|x is a real number and x ? 4}
D. {x|x is a real number and x ? -4}
Answer: C
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Write each fraction as an equivalent fraction with the LCD of the two fractions as the denominator.
and 
A. 
; 
B. 
; 
C. 
; 
D. 
; 
Solve the radical equation. Check all proposed solutions.
= 1
A. x = 
B. x = - 
C. no solution
D. x = - 
Solve the equation for solutions in the interval [0°, 360°).tan2 2? = 5
A. ? = 0°, 90°, 180°, 270° B. ? = 33°, 57°, 123°, 147°, 213°, 237°, 303°, 327° C. ? = 0°, 45°, 90°, 135°, 180°, 225°, 270° D. ? = 0°
Graph the quadratic equation. Identify the vertex and the intercepts.y = 2x2 + 6x - 1
A. Vertex: 
;
x-intercepts: 
, 
;
y-intercept: (0, -1)
B. Vertex: 
;
x-intercepts: 
,
;
y-intercept: (0, -1)
C. Vertex: 
;
x-intercepts: 
, 
;
y-intercept: (0, -1)
D. Vertex: 
;
x-intercepts: 
, 
;
y-intercept: (0, -1)