Find the function value indicated for the function. If necessary, round to two decimal places. If the function value is not a real number and does not exist, state so.Evaluate z(x) = 
for z(4)
A. not a real number
B. -3
C. -
D. 21
Answer: A
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Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.y = 2x3 - 1 from x = 1 to x = 6; n = 5
A. 825 B. 875 C. 800 D. 850
Use the graph of 
to guess at the limit 
, if it exists.
a. –2
b. –1
c. Does not exist
d. –3
Solve the problem.The percent of people who say they plan to stay in the same job position until they retire has decreased over recent years, as shown in the table below.
Find a power function that models the data in the table using an input equal to the number of years from 2000. According to the unrounded model, in what year will only 23% of people plan to stay in the same job position until retirement?
A. 2016 B. 2015 C. 2013 D. 2011
Graph the inequality.y ? x - 2
A. 
B. 
C. 
D. 