To find how many nights Krista can stay in Florida based on her savings, we can set up an equation based on the total cost \( c \).
The total cost consists of:
- The fixed cost of the plane ticket: $1,250
- The variable cost of the hotel: $250 per night
Thus, the cost function \( c \) based on the number of nights \( n \) is:
\[ c(n) = 1250 + 250n \]
Krista has saved $3,500, so we can set this equal to the cost function:
\[ 3500 = 1250 + 250n \]
To find \( n \), we first subtract the fixed cost of the plane ticket from her total savings:
\[ 3500 - 1250 = 250n \]
This simplifies to:
\[ 2250 = 250n \]
Next, we divide both sides by 250 to find \( n \):
\[ n = \frac{2250}{250} = 9 \]
Therefore, Krista can stay in Florida for 9 nights.