Solve the problem.Suppose that for an electrical appliance, voltage is given by 
and amperage by 
where t is time in seconds. The wattage is given by 
Find the maximum wattage used by the appliance.
A. 404.46
B. 101.115
C. 202.23
D. 189
Answer: C
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Simplify the expression. Assume that all variables are non-negative.
A. x
B. x3
C. x6
D. 
Write the partial fraction decomposition of the rational expression.
A. 
+ 
+ 
B. 
+ 
C. 
+ 
D. 
+ 
Rotate the axes so that the new equation contains no xy-term. Discuss the new equation.xy +16 = 0
A. ? = 45°
- 
= 1
hyperbola
center at (0, 0)
transverse axis is y'-axis
vertices at (0, ±4
)
B. ? = 45°
+ 
= 1
ellipse
center at (0, 0)
major axis is y'-axis
vertices at (0, ±4
)
C. ? = 36.9°
+ 
= 1
ellipse
center at (0, 0)
major axis is the x'-axis
vertices at (±2, 0)
D. ? = 45°
y'2 = -32x'
parabola
vertex at (0, 0)
focus at (-8, 0)
Graph the system of inequalities. Find the coordinates of the vertices.3y - x ? 9,y + 2x ? 10,y ? 0
A. 
(-9, 0) , (5, 0)
B. 
(-9, 0) , (3, 4) , (5, 0)
C. 
(3, 4)
D. 
(0, 10) , (3, 4) , (5, 0)