Solve by substitution and check.x + y = 9 y = 2x + 3
A. (7, 2)
B. (2, 7)
C. (3, 6)
D. (1, 9)
Answer: B
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Find the volume of the solid generated by revolving the region about the y-axis.The region enclosed by the triangle with vertices (4, 0), (4, 2), (6, 2)
A. 
?
B. 
?
C. 
?
D. 
?
Find the linearization L(x) of f(x) at x = a.f(x) = x + 
, a = 2
A. L(x) = 
x + 1
B. L(x) = 
x + 1
C. L(x) = 
x + 
D. L(x) = 
x + 
Solve the absolute value equation.
= 
A. x = - 
, 
B. x = 
C. no solution
D. x = - 
, 9
Solve the problem.Two tracking stations are on the equator 122 miles apart. A weather balloon is located on a bearing of N 32°E from the western station and a bearing of N 12°E from the eastern station. How far, to the nearest mile, is the balloon from the western station? Round to the nearest mile.
A. 349 mi B. 248 mi C. 358 mi D. 239 mi