Please help ASAP It’s due today

If you answer right ill give brainliest, : )

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

Compute the standard deviation of the following set of data to the nearest whole number. 10, 10, 15, 20, 25