Which of the equations below will answer the following question? Select all that apply. Explain your answers. I think of a number, add 7 and then multiply by 4. My answer is 80. What was my number?

x + 28 = 80
4(x+7) = 80
4x + 7 = 80
4x + 28 = 80

The area of an extra large circular pizza from gambino's pizzeria is 484 pi cm squared . what is the diameter of an extra large pizza from gambino's pizzeria?

Ineed if you could explain and give me the answer you! this needs done

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.