Solve the problem.The half-life of a certain radioactive substance is 5 years. Suppose that at time 
there are 28 g of the substance. Then after t years, the number of grams of the substance remaining will be N(t) = 28
t/10How many grams of the substance will remain after 45 years?Round to the nearest hundredth of a gram.
A. 1.24 g
B. 0.15 g
C. 0.62 g
D. 0.31 g
Answer: A
Mathematics
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Consider the series 
.
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Find the radius of convergence of the power series.
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__________
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Find the interval of convergence of the power series.
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__________
What will be an ideal response?
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Determine the truth value of the statement.(p ? q) ? ~(~p ? ~q)
Fill in the blank(s) with the appropriate word(s).
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Find f'(x) at the given value of x.f(x) = 
; Find f'(-1).
A. - 
B. - 
C. 
D. 
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Factor completely. State that the polynomial is prime if it cannot be factored.25k2 - 4m2
A. (5k + 2m)2 B. prime C. (5k - 2m)2 D. (5k + 2m)(5k - 2m)
Mathematics