The formula of a slope:

We have the points (2, 5) and (4, 10). Substitute:

This means that 2.5mm of rain falls every hour
Let's use x to represent the number of hours since we don't know that.
750+250x<u><</u><u />2500
Subtract 750 from both sides.
250x<u><</u><u />1750
Divide both sides by 250.
x<u><</u><u />7
The most hours that they can do is 7, or it can be less.
Answer:
For me i just guess lol i dont know the correct answer i just telling you the truth
Step-by-step explanation:
If you look at the end points you see they are different the hole one means the line doesn't reach that point but gets really really close the solid one means starting at that point.