Please I need help with this

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 f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4