The answer is X>50. Hope this helps!
Use distributive property:
16. 5k(3 - 4k)
15k - 20k^2
18. 6g^2(g - 8)
6g^3 - 48g^2
20. -2n^2 (5n - 9 + 4n^2)
-10n^3 + 18n^2 - 8n^4
-29 is 29 degrees away from 0 degrees.
31 is 31 degrees away from 0 degrees.
-29 (the temperature in Duluth) is closer to 0, because 29 is less than 31.
I honestly don’t even know how to explain this- but ik that 3 should be alright to type in bc if you were to write it on a graph you would move 1 unit to the right and 3 units up from there based on the coordinates after the origin (0,0).