Find the circumference of a circle with a radius of 6?

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

1) what is the measure of the exterior angle, ∠uvw ? 2) in triangle man, what is the measure of the exterior angle at n (in degrees)?