What is the answer to 25% of 240

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.

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.