Good day! Please I'm begging for help! Anyone please and I really very much appreciate it. Thank you sincerely! Topic: Solving Exponential and Logarithmic Equations (General Math)

You can refer to the picture above. Please help, thank you for your kindness!

Numbers beside the log are subscript. Refer to the image if confused. Number 3 can't be express in word form. Please and thank you for helping!

1. Find the solution set of log3(x + 9) + log3(x+3) = 3

2. Given that 2^a = b and 2^b = a. What is the simplest form of b^b - a^a - 2^2^2^2^2^2^b/b + a^1/2

4. Solve for c. (c/2)^log2(c) = 8c