If sally has 20 apples and ben takes 5 how many does she have

What is the inverse of the function f(x)=2x+1

Does anyone know how to do geometryme with this problem

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.