20 points! Need some help with this. :D

The labor fee is $377

The fencing material costs $4 per foot

s equals the number of feet of fencing material

Step-by-step explanation:

The constant fee is the value that does not change, which is $377.

The only value that is dependable (relies on another variable) is the amount of fencing material, and for each foot of material, it costs $4.

s is the dependant variable, which means it can change. The only value that can change is the number of feet of material.

- "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."