Answer:
One of it culd be -3 or 3
Step-by-step explanation:
Answer:
![t_1=5](https://tex.z-dn.net/?f=t_1%3D5)
![t_2=9](https://tex.z-dn.net/?f=t_2%3D9)
![t_3=13](https://tex.z-dn.net/?f=t_3%3D13)
![t_{n+1}-t_n=4](https://tex.z-dn.net/?f=t_%7Bn%2B1%7D-t_n%3D4)
Step-by-step explanation:
We have that:
![t_n=4n+1](https://tex.z-dn.net/?f=t_n%3D4n%2B1)
When we substitute n=1, we get:
![t_1=4*1+1=5](https://tex.z-dn.net/?f=t_1%3D4%2A1%2B1%3D5)
When we substitute n=2 we get:
![t_2=4*2+1=9](https://tex.z-dn.net/?f=t_2%3D4%2A2%2B1%3D9)
When we substitute n=3, we get:
![t_3=4*3+1=13](https://tex.z-dn.net/?f=t_3%3D4%2A3%2B1%3D13)
When we substitute n=n+1, we get:
![t_{n+1}=4*(n+1)+1=4n+5](https://tex.z-dn.net/?f=t_%7Bn%2B1%7D%3D4%2A%28n%2B1%29%2B1%3D4n%2B5)
Now
![t_{n+1}-t_n=4n+5-(4n+1)](https://tex.z-dn.net/?f=t_%7Bn%2B1%7D-t_n%3D4n%2B5-%284n%2B1%29)
We expand and simplify to obtain:
![t_{n+1}-t_n=4n+5-4n-1](https://tex.z-dn.net/?f=t_%7Bn%2B1%7D-t_n%3D4n%2B5-4n-1)
![t_{n+1}-t_n=4](https://tex.z-dn.net/?f=t_%7Bn%2B1%7D-t_n%3D4)
Answer:
It will last 18 days.
Step-by-step explanation:
A- solve bracket first so
3/4 + 2/9 +5/12 then multiply by 3.6 = 5
do the same with the rest and u get
A=5
B=1
C=15
D=3
please mark brainliest