What are the solutions to the quadratic equation x^2+6x=40

Question 101 points)which equation in slope-intercept form represents the line that passes through (5, 1) and(-4,7)

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?

Find the multiplicative inverse of 8-12i