It give f(x) = x-3x⁴ +2x³ -4x² +5x -10 and f(4)(x)?​

Ily begins solving the equation 4(x – 1) – x = 3(x + 5) – 11. her work is shown below. 4(x – 1) – x = 3(x + 5) – 11 4x – 4 – x = 3x + 15 – 11 3x – 4 = 3x + 4 how can her partial solution be interpreted?

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Math it's appreciated. (picture provided)