Is 9.59166304663 a rational or irrational number.

Pls , the question is in the picture!

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?