Find dy/dx by implicit differentiation.x1/3 - y1/3 = 1
A. - 
2/3
B. - 
2/3
C. 
2/3
D. 
2/3
Answer: D
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Translate to an equation, then solve.A number increased by nine is negative thirteen.
A. 9 + n = -13, n = 22 B. n + 9 = -13, n = -22 C. 9 + n = -13, n = -4 D. n - 13 = 9, n = 22
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
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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.
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A. 
B. 
C. 
D. 
E. 
Factor the polynomial completely using the trial and error method.15x2 + 4xy - 4y2
A. (15x + 2y)(x - 2y) B. prime C. (3x - 2y)(5x + 2y) D. (3x + 2y)(5x - 2y)
Determine if the sequence is geometric. If the sequence is geometric, find the common ratio.6, -6, 6, -6, 6, . . .
A. yes, 6 B. no C. yes, -1 D. yes, - 6