HELP IM TIMED but it’s metric conversion, answer the first question to answer the second one.

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?

2.5 milligrams is equivalent to how many grams

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