Answer:
Johny rode his bike 30ft up the hill and stopped to rest and then rode back down. He rode up another 30ft and stopped then started his descent back down.
Step-by-step explanation:
Answer:

Step-by-step explanation:
Answer:
30*50*40
= 60000
Step-by-step explanation:
yes
select the one that says "no, the estimate should be higher."