Is 3х - 4(х + 5) = 6x - 20 - 7x one solution , no solution or infinitely many solutions

What is the logarithmic function modeled by the following table? x f(x) 9 2 27 3 81 4

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

Standard deviation of 19,29,21,22,23