Find a matrix A and a column matrix B that describe the following tables involving credits and tuition costs. Find the matrix product AB, and interpret the significance of the entries of this product.
A. AB = 
Tuition for Student 2 is $1104 and tuition for Student 1 is $822.
B. AB = 
Tuition for Student 2 is $1095 and tuition for Student 1 is $809.
C. AB = 
Tuition for Student 1 is $1101 and tuition for Student 2 is $809.
D. AB = 
Tuition for Student 1 is $1101 and tuition for Student 2 is $822.
Answer: D
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A. x ? 2.028647 B. x ? 2.000000 C. x ? 2.028758 D. x ? 2.039758
Find the magnitude of the vector.u = 
A. 
B. 5
C. 
D. 
Solve the system by substitution.
A. (-4, -13) B. (-13, -4) C. (2, 3) D. (0, 0)
For the given functions f and g, find the requested function and state its domain.f(x) = 
; g(x) = 
Find f ? g.
A. (f ? g)(x) = 
; (-?, 0) ? (0, ?)
B. (f ? g)(x) = 
; [-7, 0) ? (0, ?)
C. (f ? g)(x) = 
; [-7, 0) ? (0, ?)
D. (f ? g)(x) = 
; [0, 7) ? (7, ?)