Me with these (photos)
i understand % but when they word it like this i get very confused.

A) if $50000 is invested in a bank account that pays 9.3% of interest compounded on a six-monthly basis, how much money will be in the account after 3 and 12 years? b) if matusalen's father had put $2.0 in the bank when he was born and there, how long would matusalen have had to his death (969 years later) if the interest was 7% per year composed each month and weekly?

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

How can (square root of 25) ^2 be rewritten?