Evaluate the expression for the given replacement values.x + y
for x = -89 and y = -26
A. -63
B. 63
C. 115
D. -115
Answer: D
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The U.S. population is approximated by the function 
, where P(t) is measured in millions of people and t is measured in 30-year intervals, with t = 0 corresponding to 1930. What is the expected population of the United States in 2020 (t = 3)? Round your answer to one decimal place.
?
__________ million
Fill in the blank(s) with the appropriate word(s).
Graph the function.f(x) = log1/5x
A. 
B. 
C. 
D. 
Find the maximum and minimum values of the objective function f subject to the stated constraints.f = 8x + 12y, subject to40x + 80y ? 560,6x + 8y ? 72,x ? 0,y ? 0.
A. Maximum: 96; Minimum: 0 B. Maximum: 96; Minimum: 84 C. Maximum: 100; Minimum: 0 D. Maximum: 100; Minimum: 84
The following double-bar graph illustrates the revenue for a company for the four quarters of the year for two different years. Use the graph to answer the question. 
In what quarter was the revenue the greatest for 2009?
A. first quarter B. second quarter C. fourth quarter D. third quarter