Determine if the statement is a proportion.I. 
II. 
A. I is a proportion, II is not a proportion.
B. I is not a proportion, II is a proportion.
C. I and II are both proportions.
D. Neither I nor II are proportions.
Answer: B
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Apply the distributive property.5x(9 - x)
A. -5x2 - 45x B. -5x2 + 45x C. 5x2 + 45x D. 5x2 - 45x
Match the equation of the ellipse with the appropriate description. 
+ 4y2 = 6400
A. x-intercepts (2500, 0), (-2500, 0); y-intercepts (0, 89), (0, -89)
B. x-intercepts (50, 0), (-50, 0); y-intercepts (0, 40), (0, -40)
C. x-intercepts (40, 0), (-40, 0); y-intercepts (0, 50), (0, -50)
D. x-intercepts 
, 
; y-intercepts (0, 80), (0, -80)
Find 
by implicit differentiation.
10 cos x siny = 16
Solve the linear inequality. Other than ?, use interval notation to express the solution set and graph the solution set on a number line.
- 
? 
+ 1
A. 
B. 
C. 
D. 
