Christopher is deciding between two different movie streaming sites to subscribe to. Plan A costs $31 per month plus $2 per movie watched. Plan B costs $11 per month
plus $3 per movie watched. Let A represent the monthly cost of Plan A if Christopher
watches x per month, and let B represent the monthly cost of Plan B if Christopher
watches x movies per month. Write an equation for each situation, in terms of x, and
determine the interval of movies watched, x, for which Plan A is cheaper than Plan B.

- "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."

the answer is b

b

step-by-step explanation:

i dont know