Multiply.(5x - 4y)2
A. 5x2 + 16y2
B. 5x2 - 40xy + 16y2
C. 25x2 - 40xy + 16y2
D. 25x2 + 16y2
Answer: C
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Solve the problem.A size 12 dress in Country C is size 64 in Country D. A function that converts dress sizes in Country C to those in Country D is 
Find the inverse function.
A. f-1(x) = x - 20
B. f-1(x) = 
+ 20
C. f-1(x) = 
- 20
D. f-1(x) = 
Provide an appropriate response.Why is it not possible to choose h and k, neither zero, so the parabola 
has its vertex at the origin?
What will be an ideal response?
Find the requested function value of ?.If sin ? = 
, find sec ?.
A. 
B. 
C. 
D. 
Solve the problem.For what values of ? (0 ? ? < 2?) do maximum r-values occur on the graph of the polar equation 
Note that a maximum r-value occurs at a point that is the maximum distance from the pole.
A. 0, ?
B. 
, 
C. 
, 
D. 0, 
, ?, 