Elizabeth is returning to the United States from Canada. She changes the remaining 300 Canadian dollars she has to $250 US dollars. What was $1 US dollar worth in Canadian dollars?

1.20 Canadian Dollars

Step-by-step explanation:

Use cross multiplication to solve for this.

Keep Canadian dollars on top and the USD on the bottom.

So you will have:

300(1)/250 = 1.20

- "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."