Find the foci of the ellipse whose equation is given.
+ 
= 1
A. foci at (-3 + 
, -1) and (-3 - 
, -1)
B. foci at (- 
, -3) and (
, -3)
C. foci at (-1 + 
, -1) and (-1 - 
, -1)
D. foci at (-1 + 
, -3) and (-1 - 
, -3)
Answer: D
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A. -0.90 - 2.69j B. -0.90 + 2.69j C. -0.04 + 2.84j D. -2.69 - 0.90j
Solve the problem.Mr. Howard installed 
-inch roofing shingles on top of a 
thick tar paper. What was the combined thickness of the two layers of materials?
A. 
inch
B. 
inch
C. 
inch
D. 
inch
Write the ratio as a fraction in lowest terms.$9 to $42
A. 
B. 
C. 
D. 
Classify the function as a polynomial function, rational function, or root function, and then find the domain. Write the domain in interval notation.g(x) = 
A. rational function; (-?, ?) B. rational function; (-?, -2) ? (-2, 2) ? (2, ?) C. rational function; (-?, 0) ? (0, ?) D. rational function; (4, ?)