Answer:
index = 9; exponent = -8
Explanation:
When dealing with fractional exponents, simply remember that the exponent is always the numerator and the index is always the denominator:
![x^{(exponent)/(index )](https://img.qammunity.org/2023/formulas/mathematics/college/bxhbeofjzbqdloix21x8qeybvrxndcchnx.png)
You can simply remember that e comes before i in the alphabet to remember that exponent comes before index.