Can someone please help me with my homework and please.

I’ll give 40 points please help me

7. 97 round to 100

8. 245 round to 200

9. 205 round to 200

10. 549 round to 500

11. 274 round to 300

12. 162 round to 200

13. 124 round to 100

14. 315 round to 300

15. 495 round to 500

16. 238 round to 200

17. 376 round to 400

18. 238 round to 200

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet