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<span>Let's do this step by step, we know that the guy steals $ 100
So it would be - $ 100 for the store.
The men buy $ 70 merchandise WITH THE MONEY THAT HE STOLE, but the money that he stole CAME BACK to the store
So up to this poin, : - $ 100 + $100 - $ 70 = - $ 70 for the store
After that , the store give $ 30 cash back,
So in the and : - $ 70 - $30 = - $ 100 lost for the store
</span>
The area is 80 I may not be completely right but that is what I got
I hope this helps
Would assume:
f(n + 1) = f(n) - 2
f(2) = f(1 + 1) = f(1) - 2 = 18 - 2 = 16
<span>f(3) = f(2 + 1) = f(2) - 2 = 16 - 2 = 14
</span>
<span>f(4) = f(3 + 1) = f(3) - 2 = 14 - 2 = 12
</span>
<span>f(5) = f(4 + 1) = f(4) - 2 = 12 - 2 = 10
</span>
f(5) = 10
