Bonjours qui peut m'aider svp.
Pour la 1ere question j'ai marqué
f(x)=0,07x+365
g(x)=
Pour la 1ere question j'ai marqué
f(x)=0,07x+365
g(x)=
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Bonjour,1) f(x) = 0,07x
g(x) = 0,049x+56
2)[((0,07x-(0,049x+56))/0,07x]*100 =
[(0,07x-0,049x-56)/0,07x]*100 =
[(0,021x-56)/0,07x]*100 =
(0,3-800x)/x]*100 =
30-(80000/x)
3) 30-(80000/x)> 25
-80000/x>25-30
x>16000km
>30, non car 30-80000/x>30 = -80 000/x>30-30 impossible