How many positive integers n have exactly 5 distinct digits in base 16?

Negative 5 1/12 + negative 4 1/4 + 6 3/4

Hey hotel charges guests $19.75 a day to rent five video games at this rate which expression can be used to determine the charge for renting nine video games for one day at this hotel? pls

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x