To find out how much money Jamie had to start with, we can add up the costs of her purchases and the amount of money she has left.
- Cost of french fries: $1.40
- Cost of hamburger: $2.25
- Amount of money left: $0.35
Now, we will add these amounts together:
\[ 1.40 + 2.25 + 0.35 = 4.00 \]
So, Jamie had $4.00 to start with.