What is \left(6^{-3}\right)\left(8^{2}\righ t) as a fraction

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

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.