Solve the problem.Find the centroid of the region cut from the first quadrant by the line 
.
A. 
= 
, 
= 3
B. 
= 3, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Answer: A
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Let U = {q, r, s, t, u, v, w, x, y, z}, A = {q, s, u, w, y}, B = {q, s, y, z}, and C = {v, w, x, y, z}. List the elements in the following set.
A. {t, v, x} B. {r, t, u, v, w, x, z} C. {q, s, t, u, v, w, x, y} D. {s, u, w}
Factor the polynomial completely.100x3 - 20x2 - 8x
A. x(5x - 2)(20x + 4) B. x(20x - 8)(5x + 1) C. 4x(5x - 2)(5x + 1) D. 4(5x2 - 2)(5x + 1)
Rewrite the sum using sigma notation.28 + 40 + 52 + 64 + 76
A. 
B. 
C. 
D. 
A phase trajectory is shown for populations of rabbits (R) and foxes (F). Describe how each population changes as time goes by.
Select the correct statement.
a. At t = B the number of rabbits rebounds to 500.
b. At t = B the number of foxes reaches a maximum of about 2400.
c. At t = B the population of foxes reaches a minimum of about 30.