Please answer this questionnn

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

What is the square root of 45? (step by step working plz)

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply