Solve the equation using the quadratic formula. Simplify irrational solutions, if possible.x2 + 8x - 5 = 0
A. {-4 ± 2
}
B. {4 ± 
}
C. {-1 ± 
}
D. {-4 ± 
}
Answer: D
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Find the expression.u = 
, v = 
Find u - v
A. 
B. 
C. 
D. 
The population aged 65 years old and older (in millions) from 2000 to 2050 is projected to be
?
?
where 
is measured in decades, with 
corresponding to 2000. What will be the average population aged 65 years and older over the years from 2000 to 2040?
(Hint: The average population is given by 
. Multiply the integrand by 
and then use the method of substitution.) Please round your answer to one decimal place.
?
__________ million
Fill in the blank(s) with the appropriate word(s).
Find the perimeter and area of the figure.A rectangle 2 ft by 9 ft
A. P = 14 ft, A = 18 ft2 B. P = 8 ft, A = 36 ft2 C. P = 11 ft, A = 36 ft2 D. P = 22 ft, A = 18 ft2
Find the integral.
A. 4e(4p3) + C
B. 
e(4p3) + C
C. 
e(4p3) + C
D. 
e(4p3) + C