Solve the problem.A rug is to fit in a room so that a border of consistent width is left on all four sides. If the room is 
by 
and the area of the rug is 112 square feet, how wide will the border be?
A. 4 ft
B. 5 ft
C. 3 ft
D. 5.5 ft
Answer: C
Mathematics
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Use reduction formulas to evaluate the integral.
A. 
+ C
B. 
+ C
C. 
+ C
D. 
+ C
Mathematics
Solve the problem.The population of a particular country was 24 million in 1982; in 1992, it was 28 million. The exponential growth function 
describes the population of this country t years after 1982. Use the fact that 10 years after 1982 the population increased by 4 million to find k to three decimal places.
A. 0.025 B. 0.651 C. 0.139 D. 0.015
Mathematics
Find the vertex.f(x) = 4x2 - 40x + 104
A. (-4, -5) B. (4, 5) C. (-5, -4) D. (5, 4)
Mathematics
Find ?y and f '(x) ?x for the given function.y = f(x) = 3x + 2, x = 9, and ?x = 2
A. 10; 10 B. 6; 6 C. 8; 6 D. 10; 6
Mathematics