Need help horribly geometry question

Which function families have maximums and minimums? 1.)linear absolute value functions and exponential functions 2.) linear absolute value functions and quadratic functions 3.) linear absolute value functions and linear functions 4.) linear absolute value functions and constant functions

Find the balance at the end of 4 years if 1000 is deposited at the rate of

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?