How do I do this ???!

The answer is 24

Step-by-step explanation:

The top one is basicly 36÷3 and that = 12

The second one is 12+? So you have to find out what (?) is. You do this by doing 28-12=16 16÷2=8

The next one is 8-?=4 so what we do it 8-4=4

The final one is all the answers added together so 12+8+4= 24 -(sorry for any spelling mistakes)

i only understand part A:

a) Yes, the more time the plant spend in sunlight, the taller it grows. for example, the plant that spend no time in the sun only grows to 4cm while the plant that spent 9 hours in the sun grew to 31