Write the equation of a circle whose center is at (6, -7) and whose radius is 4. Make sure to simplify the equation just like I did in the video.

Josephine has a great garden with and area of 2x2 + x - 6 square feet

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

Does the point (1, sqrt 7) lie on circle shown.