True or false?When using a truth table, the statement ~p ? ~q is equivalent to ~(p ? q).
A. True
B. False
Answer: A
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Verify the identity.
= cot y - cot x
What will be an ideal response?
Solve the problem.A nuclear scientist has a sample of 
of a radioactive material which has a half-life in hours. She monitors the amount of radioactive material over a period of a day and obtains the following data. Use a graphing utility to fit an exponential function to the data. Predict the amount of material remaining at 40 hours.
.
A. y = 86e-0.071x, 5.0 mg B. y = 92e-0.0686x, 5.9 mg C. y = 100e-0.077x, 4.6 mg D. y = 100e-0.077x, 6.7 mg
Find the derivative of the function and evaluate the derivative at the given x-value.f(x) = 
at x = -1
A. f'(x) = - 
; f'(-1) = -8
B. f'(x) = 
; f'(-1) = 8
C. f'(x) = 8; f'(-1) = 8
D. f'(x) = - 8x2; f'(-1) = - 8
Multiply. x(x² - 2x + 6)
