For this problem, let 
, and 
, and find
tan ?
What will be an ideal response?
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Find all vertical asymptotes of the given function.R(x) = 
A. x = -4, x = 0, x = 7 B. x = -7, x = 4 C. x = -4, x = -30, x = 7 D. x = -7, x = 0, x = 4
Round the number to the specified place.216,191 to the nearest ten
A. 216,290 B. 216,170 C. 216,200 D. 216,190
Graph the function f by starting with the graph of y = x2 and using transformations (shifting, compressing, stretching, and/or reflection).f(x) = - 
x2 
A. 
B. 
C. 
D. 
Solve the problem.Suppose, for a certain drug, the following results were obtained: Immediately after the drug was administered, the concentration was 6 milligrams per milliliter. Nine hours later, the concentration had dropped to 1.4 milligrams per milliliter. The concentration decays exponentially according to the law 
Determine the value of k for this drug.
A. k = 0.1617 B. k = -0.0062 C. k = -0.5047 D. k = -0.1617