Solve the problem.A bacterial culture has an initial population of 10,000. If its population declines to 5000 in 6 hours, when will its population be 3969? Assume that the population decreases according to the exponential model.
A. after 5 hr
B. after 9 hr
C. after 8 hr
D. after 7 hr
Answer: C
Mathematics
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Solve the problem.How many spanning trees does the following network have?
A. 15 B. 25 C. 23 D. 24 E. none of these
Mathematics
Graph the equation.4x + y = -3 
A. 
B. 
C. 
D. 
Mathematics
Let A = {q, s, u, w, y}, B = {q, s, y, z}, and C = {v, w, x, y, z}. Find the indicated set.B ? (A ? C)
A. {q, s, u, w, y, z} B. {q, r, w, y, z} C. {q, s, y, z} D. {q, w, y}
Mathematics
Find all solutions of the equation. Express the solution in radians.sin x = 
A. 
+ 2n?
B. 
+ 2n? or 
+ 2n?
C. 
+ 2n? or 
+ 2n?
D. 
+ 2n?
Mathematics