Decide whether the composite functions, f ? g and g ? f, are equal to x.f(x) = 
, g(x) = x
A. No, no
B. Yes, no
C. Yes, yes
D. No, yes
Answer: A
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Solve the problem.The orbit of a planet around a sun is an ellipse with the sun at one focus. The aphelion of a planet is its greatest distance from the sun, its perihelion is its shortest distance, and its mean distance is the length of the semimajor axis of the elliptical orbit. If a planet has a perihelion of 569.3 million miles and a mean distance of 571 million miles, write an equation for the orbit of the planet around the sun.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Determine if the expression is a term. If it is a term, state its coefficient.13 - x
A. No B. Yes, x C. Yes, -x D. Yes, 13
Find the derivative.y = 
A. 
= 
B. 
= 
C. 
= 
D. 
= 
The probability of drawing a club from a deck of cards is 
; what are the odds in favor of drawing a club?
?
A. 1 to 4 B. 3 to 1 C. 1 to 5 D. 2 to 3 E. 1 to 3