I havent learned nothing this school year

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?

What is the factored form of the following expressions? d^2 – 13d + 36

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10