Can someone help me solve Part A & B of this question?

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.

Which expression is equivalent to 2x^2+7x+4?

Which graph represents the parent function of y=(x+2)(x-2)