The function f(x) = (1 - x)^2 - 4 is decreasing throughout the interval

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

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?

The graph shown is the graph of which function?