Help!!! ( look at the picture)

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?

Find the zeros of each function. f(x) = x^2 + 5x - 6

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83