Plz help there is picture

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5