There are 15 cars in zack's toy collection 2/3 of the cars are red how many red cars does zack have?

What is the value of x in the following equation. -x ^3/2 = -27

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

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.