What is the slope of slope =12;(7,84)

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?

Write as a product: ac^2–ad+c^3–cd–bc^2+bd

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =