Help on this one please Thanks so much

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance