Question

How do you do this??

Answer 1

welll...you have there written just one relationship...it is berween 280 and 4 hours...you have to figure out speed:

$280 \div 4 = 70$

it is speed per hour

then you just connect time and speed:

1. 140 - 2
2. 280 - 4
3. 350 - 5
4. 420 - 6
5. 560 - 8
6. 700 - 10