6. lilly is making a picture graph. each picture of a star is equal to two books she has read. the row for the month of december has 3 stars. how many books did lilly read during the month of december

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.

Find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

Use pascal's triangle to find the missing values. x4 - 4xb + 6x2 - ax + 1