Put the items in order from least steep to steepest rate of change

- Michele has $125. She plans to spend $10 per week until she has a total of $75.
- Elisa's puppy weighed 4 pounds when it was born. It gained 5 pounds per month until it was 9 months old.
- f(t) -6.2x + 2.9
- g(x) = 8.1x + 45.64

1. f(t) -6.2x + 2.9

2. g(x) = 8.1x + 45.64
3. Michele has $125. She plans to spend $10 per week until she has a total of $75.
4. Elisa's puppy weighed 4 pounds when it was born. It gained 5 pounds per month until it was 9 months old.