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 1 is $1002, tuition for Student 2 is $789, and tuition for Student 3 is $1011.
B.
AB = 
The average cost per credit hour is $63.
C.
AB =
Tuition for Student 1 is $831, tuition for Student 2 is $1074, and tuition for Student 3 is $897.
D.
AB = 
Tuition for Student 1 is $1116, tuition for Student 2 is $960, and tuition for Student 3 is $726.
Answer: D
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Write the sum in summation notation.1 + 3 + 5 + 7 + . . . + 31
A. 
B. 
C. 
D. 
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A. 38 nickels B. 50 nickels C. 4 nickels D. 28 nickels
Add and, if possible, simplify.
+ 
A. 
B. 
C. 
D. - 