The projections of male life expectancy at age 65 in the United States are summarized in the following table.
Year, x01020304050YearsBeyond 65, y15.716.717.618.619.120.2?
(Here, 
corresponds to the beginning of 2000.)Find the equation of the least-squares line for these data. Use the equation found to estimate the life expectancy at 65 of a male in 2040.
?
A. 
years
B. 
years
C. 
years
D. 
years
Answer: B
Mathematics
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Use the power rules for exponents to simplify. Write the answer in exponential form.
6
A. - 212 B. - 28 C. 212 D. 28
Mathematics
Solve the system of equations by substitution.
A. x = 100, y = -27; (100, -27) B. x = -100, y = -27; (-100, -27) C. x = -100, y = 27; (-100, 27) D. x = 100, y = 27; (100, 27)
Mathematics
Differentiate.
Mathematics
Change to a percent.
A. 3
%
B. 3
%
C. 32
%
D. 31
%
Mathematics