Answer:
-5/12
Step-by-step explanation:
3/4+-5/6+1/2 = 5/12
5/12 - 5/15 = 0

is equivalent to <span>

That is in the form </span><span>

which is point slope form
In this case,
m = 1/2 is the slope
(x1,y1) = (7,-8) is the point the line goes through</span>
It would be 150 miles
equation: y = 30x