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YECeline
@YECeline
April 2019
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AIDEZ MOI S IL VOUS PLAIT
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winner123
Verified answer
Bonsoir
tarif réduit = 20 * 0.3 = 6 € de remise donc
14 €
a. montant des entrées = 7 * 14 = 98 € donc abonnement = 148 - 98 =
50 €
b. p(x) = 20 x
p'(x) = 50 + 14 x
c. pour 6 entrées, p(x) = 6*20 =
120 €
et p'(x) = 50 + 6 * 14 =
134 €
d. 50 + 14 x < 20 x
14 x - 20 x < - 50
- 6 x < - 50
x > 8.33
l'abonnement est intéressant au delà de 8 entrées
2 votes
Thanks 1
YECeline
MERCI!
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Verified answer
Bonsoirtarif réduit = 20 * 0.3 = 6 € de remise donc 14 €
a. montant des entrées = 7 * 14 = 98 € donc abonnement = 148 - 98 = 50 €
b. p(x) = 20 x
p'(x) = 50 + 14 x
c. pour 6 entrées, p(x) = 6*20 = 120 € et p'(x) = 50 + 6 * 14 = 134 €
d. 50 + 14 x < 20 x
14 x - 20 x < - 50
- 6 x < - 50
x > 8.33
l'abonnement est intéressant au delà de 8 entrées