Help me please it says A taxi charges a pick up fee plus a charge per mile. Maria paid $14.00 for a 5 mile ride. Tony paid for a $17.75 for 8 miles. Write an equation relating the numbers of miles charged for the total cost of the taxi. What is the pick up fee and how much will 18 miles cost

- "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."