When i looked it up it said subject b was the awnser but as you can see thats not true

Apackage of bacon holds 15 strips of bacon. the pancake house uses 17 packages of bacon in the morning and 21 packages in the afternoon. how many more strips were used in the afternoon than the morning?

Ineed me i stuck and i don’t want to get it wrong

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.