Solve the problem.The polynomial 
measures the concentration of a dye in the bloodstream x seconds after it is injected. Does the concentration increase between 14 and 15 seconds?
A. No
B. Yes
Answer: B
Mathematics
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Use L'H
pital's rule to find the limit.
A. 11 B. 16 C. 19 D. -13
Mathematics
Use an identity to write the expression as a single trigonometric function or as a single number. 2 cos2 
- 1
A. - cos
B. cos
C. - cos
D. cos
Mathematics
Solve the problem.Jill scored a 78 on the first of five 100-point exams in Stat 101. How many points must she average on the next four exams in order to raise her overall average to 90%?
A. 97 points B. 93 points C. 92 points D. 102 points E. none of these
Mathematics
Graph the region described by the inequality.x + 2y ? 6
A. 
B. 
C. 
D. 
Mathematics