Express the unit vector as indicated.Express the unit vector u = (cos ?)i + (sin ?)j in the same direction as the vector 4i + 3j.
A. 
i + 
j
B. 20i + 15j
C. 
i + 
j
D. 
i + 
j
Answer: C
Mathematics
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Specify the center and radius of the circle.(x + 1)2 + (y + 4)2 = 9
A. center: ( -4, -1); radius: 9 B. center: (-1, -4); radius: 3 C. center: (1, 4); radius: 3 D. center: (4, 1); radius: 9
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Provide an appropriate response.The desired loan-to-value ratio should not exceed:
A. 36% B. 28% C. 100% D. 80%
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For the pair of functions, find the indicated composition.f(x) = 
, g(x) = 
Find (f ? g)(x).
A. 
B. 
C. 
D. 
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Find the indicated sum. Use the formula for the sum of the first n terms of a geometric sequence.
A. 
B. - 
C. 
D. - 
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