Anita first rode her bike 5 blocks to the east.
She then rode twice as many blocks west. 5*2=10. She rode 10 block west. Subtract 10 from 5: 5-10=-5
She finally rode 8 blocks back east. Add 8 to -5: -5+8=3.
Anita is three blocks east from home.
The remaining amount after 4 years is 1.25 kg
<h3>How to determine the remaining amount?</h3>
The half life of a function is represented as:

Where
Ao represents the initial amount
So, we have:

In 4 years, t = 4.
So, we have:

This gives

Evaluate the expression
A = 1.25
Hence, the remaining amount after 4 years is 1.25 kg
Read more about half life at:brainly.com/question/26148784
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Answer:
+ 6b³ - 18b²
Step-by-step explanation:
<em>1: 13,148,719.2 beats</em>
<em>2: 5 5/6 days</em>
<em>3: 7 days, 5 hrs, and 2 minutes</em>
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<em>Hope this helped. Have a good day~</em>