It would be be because they didn’t distribute the 8n to the 20
The result of the expression in exponential form is 9^-4
<h3>Product of exponents</h3>
Given the expression below

According the product law, since the base are equal, we will add the exponent to have:

Hence the result of the expression in exponential form is 9^-4
Learn more on exponents here; brainly.com/question/11975096
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Figure 1 is not the answet
First you turn 16 to 0.16 then multiply 0.16 x 75 and you should get 12
I hope this helps you and your welcome : )