If a + 15 = 19, then a = ?

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?

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?