The scale of a graph just tells us how many units are between numbers. This does not change the overall distance represented.
For example, I can have two graphs on which the x-axis goes to 60. On one graph, I can count by 10s for my scale, while the other graph uses 5s. While the scales are different, the same distance is represented.
It does not. The fact that the scale may change, however, the distance between two object does not change at all. For an example, the distance between cities may stay the same while changing the scale. Therefore, it is a fact that the changing of the scale does not change the distance at all.
$3.50 I believe because the cost of ONE cup of coffee and 3 donuts is $3.70. And 2 cups and 2 donuts are 10 cents more. So ONE cup and ONE donut are $3.50 I beleve