Aplumber charges $55 per hour plus a $9 service fee if the plumber earns $255 how many hours did he work?

What is the measure of ac? 5 units 13 units 26 units 39 units

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?

Ineed me i stuck and i don’t want to get it wrong