Respuesta :

wegnerkolmp2741o

binder + folders = total cost

7.25 + folders = 9.05

he bought 6 folders at x cost each

7.25 + 6x =9.05

subtract 7.25 from each side

6x = 9.05-7.25

6x= 1.80

divide each side by 6

x = .30

Each folder cost $.30 or 30 cents

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