Solve the problem.A certain radioactive isotope has a half-life of approximately 1450 years. How many years would be required for a given amount of this isotope to decay to 80% of that amount?
A. 3367 yr
B. 387 yr
C. 467 yr
D. 290 yr
Answer: C
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If 
, calculate the value of 
.
?
A. 185.27 B. 613.71 C. 187.82 D. 402.27
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.(logax - logay) + 5logaz
A. loga
B. loga
C. logaxz5y
D. loga
Find the function with the given derivative whose graph passes through the point P.r'(?) = 5 - csc2?, P
A. r(?) = 5? - cot? - 
? - 2
B. r(?) = 5? + cot? - 
? + 1
C. r(?) = 5? - cot? - 
? + 2
D. r(?) = 5? + cot? - 
? - 1
Find the zeros of the polynomial function and state the multiplicity of each.f(x) = (x2 - 4)2
A. x = 2, multiplicity 2 ; x = -2, multiplicity 2 B. x = - 4, multiplicity 2 C. x = 2, multiplicity 5 ; x = -2, multiplicity 5 D. x = 2, multiplicity 2