Answer:
9x³ - 24x + 27
Step-by-step explanation:
7x³ − 16x + 18 - (4x³ − 6x³ + 8x − 9)
7x³ - 16x + 18 + 2x³ - 8x + 9
9x³ - 24x + 27
Well, think about where 8cm is on 1m. If you put this in a fraction, it would be 8/100. This can be reduced to 4/50, then to 2/25. So 8cm is 2/25ths of 100cm (or 1m).Divide 2/25 by 3 since you have 3m and you get 2/75ths.
We can do this by inputting -2 as x in this equation. This would get us f(x) = 3(-2)-4 = -6-4 = 10. The answer is -10. Hope this helps!
The given result matches the description in the 4th selection.