The vertices of △ABC have coordinates A(-2, -1), B(10, -1), and C(4, 4). Determine and state the area of △ABC.

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

Solve the triangle. a = 21°, c = 105°, c = 5