Can someone please tell me what exactly I need to do??
I forgot how to do this..

1)

Rent-A-Car: R = $0.25m + $100

World Explorer: W = $0.15m + $125

2)

World Explorer is the cheapest option.

3)

World Explorer is the cheapest option.

Step-by-step explanation:

You pay $0.25 per mile driven = $0.25m

You owe a flat fee of $100

Rent-A-Car: R = $0.25m + $100

Similarly, you pay $0.15 per mile in the World Explorer

And a flat fee of $125

World Explorer: W = $0.15m + $125

Rent-A-Car:

World Explorer:

World Explorer is the cheapest option.

Rent-A-Car:

World Explorer:

World Explorer is the cheapest option.

-Chetan K

- "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."