Natasha rolls a fair dice 66 times. How many times would Natasha expect to roll a number greater than 5?

This is different from the first one can someone me

The revenue each season from tickets at the theme park is represented by t(c)=5x. the cost to pay the employees each season is represented by r(x)=(1.5)^x. examine the graph of the combined function for total profit and estimate the profit after four seasons

Which number completes the inequality? 2/3 < _ < 7/9