Could someone answer these 3 questions?

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.

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

In which form is the following function written? y = - 2(x – 3)(x + 5)