Let f: x ? y. prove that f is continuous if and only if the inverse image of every closed subset of y is closed in x

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?

2/3(-6y+9x) expand each expression using the distributive property

What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters