Amanda is a shopkeeper who earns a fixed monthly salary S plus a C% commission for every item of clothing sold. Knowing this; A) Determine Amanda's salary function, knowing that when she sells 80 pieces, she earns BRL 2,516.00 and when she sells 150 pieces, she earns BRL 2,530.00 per month. What is Amanda's fixed monthly salary? How much commission does Amanda earn for each piece sold? B) Determine what Amanda's salary will be if, in a given month, she sells 300 pieces of clothing.

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