bonjour
f (x) = 49 + 29.95 x
1 . f ( 4 ) = 49 + 119.8 = 168.8
f ( 12 ) = 49 + 359.4 = 408.4
2. f (x) = 49 + 29.95x
3. 258.65 - 49 = 209.65
209.65 : 29.95 = 7
abonnement = 7 mois
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bonjour
f (x) = 49 + 29.95 x
1 . f ( 4 ) = 49 + 119.8 = 168.8
f ( 12 ) = 49 + 359.4 = 408.4
2. f (x) = 49 + 29.95x
3. 258.65 - 49 = 209.65
209.65 : 29.95 = 7
abonnement = 7 mois