Answer:
3 machine
Step-by-step explanation:
It is given that 6 machine each working at the same rate can complete the work in 12 days
We the has to complete in 8 days
Let we need x extra machine to complete the work in 8 days
So total number of machines =x+6
Now according to man work day equation 



x=3 machine
Answer:
18x-15
Step-by-step explanation:
Answer:125.666
Step-by-step explanation:
Step-by-step explanation:
For every 3 squares across, the line goea down 1 square.
Hence the slope is -1/3.