Complete the table for the radioactive isotope. Round your answer to two decimal places.
Isotope
Half-life(years)
Initial Quantity
Amount after 1000 years
5715
----
A. Amount after 1000 years: 
B. Amount after 1000 years: 
C. Amount after 1000 years: 
D. Amount after 1000 years: 
E. Amount after 1000 years: 
Answer: C
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Solve the problem.Find the length of the curve 
between x = 0 and x = 3.
A. 
?
B. ?
C. 2?
D. 
?
Solve the problem.A wooden block sitting at rest on a flat, level board will just begin to slide when the board is tilted up to a critical angle of inclination, ?s . An experiment that determines this critical angle can be used to find the coefficient of static friction, ?s , for the block on the board by using the relation 
Rewrite this relation using a quotient identity.
A. ?s = tan2 ?s B. ?s = cot ?s C. ?s = sec ?s D. ?s = tan ?s
Add or subtract, if possible. Assume that all variables represent non-negative values. Simplify your answer. 4 
+ 2xy 
A. 10x2y4
B. 10 xy4
C. 6xy5
D. 6x2y5
Determine the domain and the range of the function.f(x) = x2 + 10x + 25
A. domain: all real numbers range: {y|y ? 25} B. domain: {x|x ? -5} range: {y|y ? 0} C. domain: all real numbers range: {y|y ? 0} D. domain: {x|x ? 5} range: {y|y ? 0}