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) = 700e-0.192t, where t is the time in years? Round to the nearest hundredth year.
A. 34.12 years
B. 3.61 years
C. 37.73 years
D. 134.40 years
Answer: B
Mathematics
You might also like to view...
Use algebraic and/or graphical methods to solve the inequality.
> 
A. 
< x < 7
B. -7 < x <- 
C. x < -7 or x > - 
D. No solution
Mathematics
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.3log6x + 5log6(x - 6)
A. 15 log6x(x - 6) B. log6x3(x - 6)5 C. log6x(x - 6) D. log6x(x - 6)15
Mathematics
Graph the circle.(x - 2)2 + (y + 4)2 = 16
A. 
B. 
C. 
D. 
Mathematics
Evaluate the expression without using a calculator.81-3/2
A. 
B. 729
C. -729
D. - 
Mathematics