Rewrite the equation by completing the square f(x)=x^2-8x-2

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?

10% of 1,900,000. show me how you got the answer

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect