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Ab - c = 9 |subtract ab from both sides
- c = 9 - ab |change signs
c = -9 + ab
c = ab - 9
200.
Twenty groups of ten = 20x10
20x10 = 200
1. To represent a function all inputs need to only have ONE output. The inputs are the x values and the outputs are the y values. So, your answer would be all of the except the last 3.