A valley in California has an elevation of feet below sea level. A valley in Arizona has an elevation lower than the one in Cali
2 answers:
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Given that if a ball is dropped from x feet, it bounces up to 2/3 x feet.
And the ball is dropped from 10 feet, that is x=10 feet,
So,before the first bounce it travels 10 feet distance.
Between first and second bounce it travels
Between second and third bounce, it travels
Between third and fourth bounce, it travels
Like that between 29th and 30th bounce, it travels
Hence total distance traveled is
=
=
= 10+20*2*(1-)
= 49.9997 feet ≈ 50 feet approximately.
We have
First, we can combine like terms 3y and -7y to get -4y.
Then, we have
We could then subtract 8 on both sides to get 
Finally, we isolate y completely by dividing both sides by -4, to get
First, we can combine like terms 3y and -7y to get -4y.
Then, we have
Finally, we isolate y completely by dividing both sides by -4, to get