14/45 in simplest form

This is different from the first one can someone me

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?

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28