Which one is it like don't explain just say the answer to it

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

43lbs of tomatos cost $387. how much would 41lbs cost