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Sagot :

Bonjour,

exercice 3

A= 12x

B= y

C= 0

D= 15y

E = 12x

F= 6x²

exercice 4

a)

P = prix total

y = nombre de tee shirts

b)

y = 2

8*2+10 = 16+10 = 26

y =6

8*6 +10  = 48 + 10 = 50

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