Yousef will estimate the mean fuel efficiency of all cars by calculating the mean for his sample. Calculate the sample mean and record your answer

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?

You can find the constant of proportionality by finding the ratio of

W-16=-12 solve each one step equation plz