Help me with this plz

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

What basic trigonometric identity would you use to verify that csc x sec x cot x = csc^(2)x

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?