You are correct with part i with what you did so far, but you need to finish it.
What is function f?
i.

ii.

iii.
Answer:
7 lenth
Step-by-step explanation:
1)n-16
2)8n
3)1/2n + 20
4)4n - 20
5)length + width
6)r × t + 10
7)(t - x) × 5
I answered it and now I'm doubting my answer.. I had b≥4. Please correct me!