Write 0.425 as a fraction in simplest form

Fa bus driver leaves her first stop by 7: 00 a.m., her route will take less than 37 minutes. if she leaves after 7: 00 a.m., she estimates that the same route will take no less than 42 minutes. which inequality represents the time it takes to drive the route, r?

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

What is the value of the discrimination for the quadratic equation 0=×2+2+×2