Select the algebraic expression(s) that represents this situation: Tamiya went to the store and bought 4 shirts that cost (n) dollars each.

Select the quadratic that has root x = 8 and x = -5

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

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.