Because

therefore
f(x) = (x-3)(2x² + 10x - 1) + k, where k = constant.
Because f(3) = 4, therefore k =4.
The polynomial is
f(x) = 2x³ + 10x² - x - 6x² - 30x + 3 + 4
= 2x³ + 4x² - 31x + 7
Answer: f(x) = 2x³ + 4x² - 31x + 7
75 I think since 75 divided by 3 equals 25
A is the answer, because the highest exponent is 2.
<u>quadratic</u>
A's expression foiled would be 2x^2 + x - 6
B's expression foiled would be 3x - 12, where the exponent on x is only 1.
D's expression foiled would be x^3 - x^2 - 12x, where the exponent on x is 3.