How do you solve this

A

Step-by-step explanation:

The reason I say A, is because, take a ROUGH look at the graph. Each dot increases on average, 2 degrees each time. And with that increase, the line is increasing, saying that more and more people are attending the pool while the temperature is rising. Thats about 5 people every 2 degrees.

the answer is c. 23/3

- "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."