Answer:
Step-by-step explanation:
Consider that F(x,y,z) = (x + y, y + z, z + z)
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Ok so,
20*2= 40
20*1/2=10
40+10=50
So Johncan travel 50 km in 2 1/2 hours.
Hope this helps :)
20) Answer is: x=76
21) Answer is x=15
Answer:
5 dollars :)
Step-by-step explanation:
ig
The difference is 4hrs because 6-2 is 4