Given the diagram, find x

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?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual