Convert the following to logarithmic form: (i) 5^2 = 25 (ii) a^5 = 64 (iii) 7^x = 100 (iv) 9^0 = 1 (v) 6^1 = 6 (vi) 3^-2 = 1/9 (vii) 10^-2 = 0.01 (viii) (81)^3/4 = 27.0.01 (viii) = 27.