Pre Calculus help??????

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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.

Credits College A College B
Student 1 8 9
Student 2 6 9
Student 3 6 6

Cost Tuition
College A $56
College B $87

Please give me the instruction too
 
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