Use a graphing utility to graph the function.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: D
Mathematics
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Find the indicated derivative.Find y " if y = -9 cos x.
A. y " = 9 sin x B. y " = -9 sin x C. y " = -9 cos x D. y " = 9 cos x
Mathematics
Solve the problem.A long-distance runner runs 4 miles south and then 9 miles east. How far is the runner from the starting point? Round approximations to the nearest tenth. 
East --9 mi-->
A. 48.5 mi B. 9.8 mi C. 4.9 mi D. 6.5 mi
Mathematics
Solve. Write the answer as a mixed number in simplest form.Daniel is 70
in. tall and his brother Tyler is 67
in. tall. How much taller is Daniel?
A. 2
in.
B. 3
in.
C. 2
in.
D. 3
in.
Mathematics
Solve the system using elimination.2x + 18y = -144 8x + 6y = 18
A. (-9, 9) B. (8, -8) C. (-6, 9) D. (9, -9)
Mathematics