Answer:
1st option
Step-by-step explanation:
Each exponent inside the bracket is multiplied by the exponent outside , that is

= 
= 
A
see attached for explanation
I hope it helps
She will have 96.8 dollars in the saving account so she earned 16.8 dollars in interest
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Answer:
Step-by-step explanation:
Since they have the same base as 2, by the rule of a^m / a^n = a^m-n.
So 2^7 / 2^3 = 2^ 7-3 = 2^4 = 16
The answer is D. you can choose your words carefully