Answer:
Use ur brain and a calculator
Step-by-step explanation: Install a calculator on ur laptop. Put ur thinking cap on. :) Hope this helps!
Answer:
2
Step-by-step explanation:
this is the correct answer
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.