Radium - 221 has a half-life of 30 s. Suppose we have a 300 g sample. (a) Find a formula for the mass remaining after t seconds. (b) How much of the sample remains after 200 seconds? (c) After how long will only 20 g remain?
What will be an ideal response?
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Mathematics
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Estimate the sum or difference by first rounding as indicated.Estimate by first rounding to the nearest hundred.2355
A. 9000 B. 8618 C. 8600 D. 8700
Mathematics
Solve the problem.Decide which of the rational functions might have the given graph. 
A. R(x) = 
B. R(x) = 
C. R(x) = 
D. R(x) = 
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Use the Factor Theorem to determine whether x - c is a factor of f(x).f(x) = x4 - 5x2 - 36; x - 6
A. Yes B. No
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Find a polynomial with the given zeros.
?
?
A. 
B. 
C. 
D. 
E. none of these
Mathematics