Answer:
Step-by-step explanation:
y=a(r)^{n-1}
y=1(2)^{x-1}
The number of pennies is an illustration of pattern and sequence.
The number of pennies in the nth square is 
From the complete question, we have the following parameters




Rewrite the functions as follows:




Express 3 as 4 - 1

Replace 4 with n

Hence, the number of pennies in the nth square is 
Read more about pattern and sequence at:
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