How do you solve this

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.

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

Write the function for the graph. (1.8) (0,4)