Provide an appropriate response.What subtraction fact is illustrated by the fraction-strip model? 
A. 
- 
= 
B. 
- 
= 
C. 
- 
= 
D. 
- 
= 
Answer: B
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = -3x + 9y
A. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
c > 0
B. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
c ? 0
C. Domain: all points in the xy-plane; range: real numbers z ? 0 ; level curves: lines 
c ? 0
D. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
Provide an appropriate response.Find the length and width of a rectangular room if the area is 22.5 sq m and the length is 0.5 m longer than the width. Round to the nearest tenth. (Area = length × width)
What will be an ideal response?
Graph the hyperbola.
- 
= 1
A. 
B. 
C. 
D. 
Convert the equation to the standard form for a hyperbola by completing the square.4y2 - 25x2 + 8y - 50x - 121 = 0
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1