Answer:
28.12
Step-by-step explanation:
Answer:
It is an example of an observational study.
Step-by-step explanation:
Answer:
total bill=1644
let he drives x kilometer
then
500*2+8*x=1644
1000+8x=1644
8x= 1644-1000
8x= 644
x= 644/8=80.5 km
Step-by-step explanation: