One fifth of a number is equal to triple that number less 28. Let the unknown number be x. Write this word problem as an equation using the variable x.

Meghan has created a diagram of her city with her house, school, store, and gym identified. a. how far is it from the gym to the store? b. meghan also wants to walk to get some exercise, rather than going to the gym. she decides to walk along arc ab. how far will she walk? round to 3 decimal places.