I need help please help yo

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.

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

Which of the following graphs could represent a quartic function?