Answer:
The answer would be plan two since it would double each day, making it a lot larger than Plan 1.
Explanation:
So first, to understand this, 0 is today, and then I did this based on 4 days and 8 days after what is represented as "today."
Plan 1:
![y=5+1x](https://img.qammunity.org/2021/formulas/mathematics/middle-school/i3j4ebhmlph5pn385yd9s77bvqp4uaajsc.png)
Day 4:
![y=5+1(4)\\y=5+4\\y=9](https://img.qammunity.org/2021/formulas/mathematics/middle-school/4niusdws3twfheo9hq3f9ebe6rk88hvz4v.png)
Day 8:
![y=5+1(8)\\y=5+8\\y=13](https://img.qammunity.org/2021/formulas/mathematics/middle-school/ki605bep3p60fyb3q0p81dq7j4whmpva00.png)
Plan 2:
![y=2^(x)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/lgvj14nle7kjtf16bn0rwxsg6w7adaj6zq.png)
Day 4:
![y=2^(4) \\y=2*2*2*2\\y=4*2*2\\y=8*2\\y=16](https://img.qammunity.org/2021/formulas/mathematics/middle-school/xbvxxws1adqiqq68pihh65ekwkbai3fcpj.png)
Day 8:
![y=2^(8) \\y=2*2*2*2*2*2*2*2\\y=4*2*2*2*2*2*2\\y=8*2*2*2*2*2\\y=16*2*2*2*2\\y=32*2*2*2\\y=64*2*2\\y=128*2\\y=256](https://img.qammunity.org/2021/formulas/mathematics/middle-school/f147f7g22ttwjybnfrjoy0ggh7i7ebsnit.png)