Answer:
18-4y
Step-by-step explanation:
18 -4y because your start with 18, and each day 4 get eaten. so day 2 (4*2) there will be 8 less, etc, etc
Answer:
Step-by-step explanation:

Answer:
Step-by-step explanation:
hello :
k(n) = n2 – 4
k(–7)=(-7)² – 4 = 49 -4 = 45
there is no questions to answer