Please help, I’m being timer

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?

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)