The table shows a pattern of exponents. Powers of 5
59
52
Value
125
25
5
51
50
1
5-7
1
5
5-2
25
What is the pattern as the exponents decrease?
subtract 5 from the previous value
subtract 100 from the previous value
divide the previous value by 5
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c. divide the previous value by 5

Step-by-step explanation:

- "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."