For question 1: formula is
A) 2^x=8, Whats x? Answer: 3
B) x=6^2 then answer: 36
C) 2^x=1/4 Whats x? Answer: -2
D) x^2=9 then you square root it and you’ll get +3 and -3. Since you can’t have (-) answer: 3
E) undefined because a logarithm of a negative number does not exist in set of real number
Hope this helps :)