Can someone please help me with math.

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?

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5

What does the sign of the slope tell you about a line?