Answer and Step-by-step explanation:
The signs didn't really "swap". Instead, the whole function was divided by -1, or we could say the function was divided by -3. That would turn:
-18x² - 15x + 3 = 0
into
(-18 / -3)x² - (15 / -3)x + (3 / -3) = 0
6x² + 5x - 1 = 0
And that gives the "swapped signs".
in simplist form it should be 3x+16
Da answer is 21,000 Pounds Couse 9 + 10 = 21
[6, -infinity)
have a good night
78! is the answer to this question! trust! -6