Solve the problem.A long-distance runner runs 2 miles south and then 5 miles east. How far is the runner from the starting point? Round your answer to thousandths. 
East --5 mi-->
A. 5.385 mi
B. 3.742 mi
C. 6.385 mi
D. 7.000 mi
Answer: A
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Decide whether the expression is or is not an identity.
= sin x
A. Not an identity B. Identity
Find the graph of the function.
?
?
A. 
B. 
C. 
D. 
Solve the problem.The amount of gas that a helicopter uses is directly proportional to the number of hours spent flying. The helicopter flies for 2 hours and uses 30 gallons of fuel. Find the number of gallons of fuel that the helicopter uses to fly for 3 hours.
A. 60 gallons B. 45 gallons C. 6 gallons D. 48 gallons
Find the domain of the function and identify any vertical and horizontal asymptotes.
?
?
A. The domain is all real numbers x except x = ±2. There is a vertical asymptote at x = -2, and a horizontal asymptote at y = 0.
B. The domain is all real numbers x except x = ±2. There is a vertical asymptote at x = -2, and a horizontal asymptote at y = 
.
C. The domain is all real numbers x. There is a vertical asymptote at x = -4, and a horizontal asymptote at y = 0.
D. The domain is all real numbers x except x ?= ±4. There is a vertical asymptote at x = -4, and a horizontal asymptote at y = 0.
E. The domain is all real numbers x except x ?= ±4. There is a vertical asymptote at x = -2, and no horizontal asymptote.