If you were transported 400 years into the past with no clothes or anything else, how would you prove that you were from the future?

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?

Cody ran nine miles on his first day of training. the next day he ran 1/8 that distance. how far did he run the second day?

Me with these questions , i don’t understand scientific notation!