Help help help help me

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?