6. A
7. C
8. C
9. B
-FWEW
Answer: D
Step-by-step explanation:
A seems complicated and doesn’t make an sense while D is simple
When y=0.8
4x +8(0.8) =40
-> 4x +6.4 =40
-> 4x = 33.4
-> x=33.4/4
-> x=8.35
Hope it helps...
Regards;
Leukonov/Olegion.
Answer:
6.68181818182
