20..1 point)
seymour goodgrades is working with a polynomial function named f(x).
he calculates that f(4) = 0 for the function. which of the following must be true?
a) (x + 4) is a factor of f(x) b) (x - 4) is a factor of f(x)
c) (x + 4) is not a factor of f(x) d) (x - 4) is not a factor of f(x)
a

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

i you goofed up when writing this, because hnot is not a word minusf is not either. i cannot answer   because of that.

step-by-step explanation:

3, 12, 48, 384, 1536, 6144, 24576, 98304

step-by-step explanation:

just keep timing it by 4.