Perform the matrix operation.Given A = 
and I = 
, find IA.
A. 
B. 
C. 
D. 
Answer: C
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Calculate the Taylor polynomial of second order that approximates f(x, y) near a.f(x, y) = ln (2x + y) + y2, a = (0, 1)
A. 1 + 2x + 3(y - 1) - 2x2 - 2x(y - 1) + 
(y - 1)2
B. 2x + 3(y - 1) - 2x2 - 2x(y - 1) - 
(y - 1)2
C. -2 + 2x + 3(y - 1) - 2x2 - 2x(y - 1) + 
(y - 1)2
D. -1 - 2x - 3(y - 1) + 2x2 - 2x(y - 1) + 
(y - 1)2
Use identities to find the exact value of the expression.tan 25° cot 25°
A. 1 B. -1 C. 25 D. 0
Use the table to answer the question. Write the number in words. 
Which type of housing is most used?
A. owning a house; twenty billion, six hundred fifty-two million, eight hundred fifty-three B. owning a house; twenty million, six hundred fifty-two thousand, eight hundred fifty-three C. owning a condo; seven thousand, three hundred seventy-nine million, two hundred eleven D. renting a house; five million, one hundred fifty-three thousand, three hundred fifty-four
Write the first four terms of the sequence.an = (-3)n+1
A. a1 = -3, a2 = 9, a3 = -27, a4 = 81 B. a1 = -9, a2 = 27, a3 = -81, a4 = 243 C. a1 = 3, a2 = -9, a3 = 27, a4 = -81 D. a1 = 9, a2 = -27, a3 = 81, a4 = -243