Without using table, solve the equation 8x-2 = (frac{2}{25})

Without using table, solve the equation 8x^-2 = (frac{2}{25})

Correct Answer: Option D

Explanation

8x^-2 = (frac{2}{25})
= 200x^-2 = 2
= 100x^-2 = 1
x^-2 = (frac{1}{100})
x^-2 = 10^-2
x = 10