Solve the problem.How long will it take a sample of radioactive substance to decay to half of its original amount, if it decays according to the function A(t) = 750e-0.033t, where t is the time in years? Round to the nearest hundredth.
A. 24.75 yr
B. 221.61 yr
C. 21.00 yr
D. 200.61 yr
Answer: C
Mathematics
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Find the domain of the function.f(x) = 
A. x < 4 B. All real numbers C. x ? 0 D. x ? -4
Mathematics
Provide an appropriate response.Explain in your own words why possible solutions of radical equations must be checked.
What will be an ideal response?
Mathematics
Solve the equation using the quadratic formula. Simplify irrational solutions, if possible.x2 + 7x + 3 = 0
A. 
B. 
C. 
D. 
Mathematics