-320. The negative sign represents loss. In all of the other cases, values are either being added or not changed at all.
30 divided by 60 is 1/2
1/2 miles per minute
10 x 1/2 = 5
5 miles in 10 minutes
Hope this helped
Answer:
Step-by-step explanation:
............................................ (1)
............................................ (2)
now equate both (1) and (2)



now substitute the values of x ,
when
, y becomes 0
when
, y becomes 8
so, solution set:
and 