1st , 3rd and last option is correct
Answer:
-11 =x
Step-by-step explanation:
-1 = (5+x) /6
multiply by 6
-6 = 5+x
-11= x
The distance between point C and point D is 10.
Point D is on the 1 and Point C is on -9.
1-(-9)=10.
If it took 4 miles per hour you multiply that twice cuss its traveling back then forth so you repeat the same process 30 miles times 2 which is 60 hope this helps.