Factor the gcf: −6x3y + 9x2y2 − 12xy3

a. 3xy(−2x^2 + 3xy − 4y^2)
b. −3xy(2x^2 + 3xy − 4y^2)
c. −3xy(2x^2 − 3xy + 4y^2)
d. −3(2x3y − 3x^2y^2 + 4xy^3)

Astudent found the solution below for the given inequality. |x-9|< -4 x-9> 4 and x-9< -4 x> 13 and x< 5 which of the following explains whether the student is correct? -the student is completely correct because the student correctly wrote and solved the compound inequality. -the student is partially correct because only one part of the compound inequality is written correctly. -the student is partially correct because the student should have written the statements using “or” instead of “and.” -the student is completely incorrect because there is no solution to this inequality.