Find the inverse of the matrix A, if it exists.A = 
A. A-1 = 
B. A-1 does not exist.
C. A-1 = 
D. A-1 = 
Answer: D
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Evaluate the integral.
A. 
sin-1 
x + C
B. 
sec-1 
+ C
C. 
sec-1 
+ C
D. 
sec-1 
+ C
Identify where f is increasing and where f is decreasing.f(x) = 
A. increasing: [-4, ?); decreasing: (-?, -4] B. increasing: (-?, 4]; decreasing: [4, ?) C. increasing: (-?, -4]; decreasing: [-4, ?) D. increasing: [4, ?); decreasing: (-?, 4]
Solve.You make a deposit of $90 into your checking account and you write a check for $40. What is the overall effect of these two actions?
A. -$130 B. -$50 C. $130 D. $50
Solve.You are varnishing the background for a rectangular mural. The base of the mural is 5
meters and the height of the mural is 5 meters. How many cans of varnish will you need if each can covers 10 square meters?
A. 11 cans of varnish B. 6 cans of varnish C. 28 cans of varnish D. 3 cans of varnish