Match the rational function with the appropriate graph.f(x) = 
A. 
B. 
C. 
D. 
Answer: D
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Write a chain rule formula for the following derivative.
for z = f(r, s); r = g(t), s = h(t)
A. 
= 
+ 
B. 
= 
+ 
C. 
= 
D. 
= 
+ 
Solve the problem.For three sprints at a track meet, a runner covered a given distance in the following times: 8.6863 seconds, 8.1998 seconds, and 8.4545 seconds. List these times in descending order.
A. 8.4545 seconds, 8.1998 seconds, 8.6863 seconds B. 8.1998 seconds, 8.4545 seconds, 8.6863 seconds C. 8.4545 seconds, 8.6863 seconds, 8.1998 seconds D. 8.6863 seconds, 8.4545 seconds, 8.1998 seconds
Insert either <, >, or = to make a true statement.
_____ 4
A. < B. = C. >
Determine which value(s), if any, must be excluded from the domain of the variable in the expression.
A. x = -3
B. x = -9
C. x = 0, x = - 
D. none