Need help for this trigonometry problem. I tried solving it pls help. thx

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?

Can someone answer this question for me

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?