Evaluate the limit.
a. -448
b. -1070
c. -1090
d. -1080
e. 320
d. -1080
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Evaluate the integral.
A. 
B. Diverges
C. 1
D. 
Decide whether the expression has been simplified correctly.(3b)8 = 3b8
A. No B. Yes
Experiments conducted by A. J. Clark suggest that the response R(x) of a frog's heart muscle to the injection of x units of acetylcholine (as a percent of the maximum possible effect of the drug) may be approximated by the rational function
?
?
where b is a positive constant that depends on the particular frog. If a concentration of 50 units of acetylcholine produces a response of 40% for a certain frog, find the "response function" for this frog.
?
A. 
B. 
C. 
D. 
E. 
Solve the problem.
The graph of y = f(x) depicts the amount of cash y in dollars that a bank teller has at his station after x minutes. (i) When did the largest withdrawal occur? (ii) How much was it?
A. After 137.5 minutes; $150 B. After 62.5 minutes; $250 C. After 25 minutes; $150 D. After 137.5 minutes; $250