Sagot :
1. R= 47x + (1800-x)*55
= 47x + 99000 - 55x
= -8x + 99000
2. Soit f(x) = -8x + 99000
f(652) = -8*652 + 99000 = 93784
= 47x + 99000 - 55x
= -8x + 99000
2. Soit f(x) = -8x + 99000
f(652) = -8*652 + 99000 = 93784