Isabelle made this calendar to show the number of weeks until she leaves for vacation. She wants to write the number of weeks as a fraction. Isabelle writes the denominator as 1.
It is not clear what information is shown on the calendar and how Isabelle is representing the number of weeks. Without more context, the question cannot be answered.
To write the number of weeks as a fraction, Isabelle needs to determine the numerator of the fraction. However, if she chooses to write the denominator as 1, it means that she wants to represent the number of weeks as a whole number without any fractional part. Therefore, Isabelle does not need to write the number of weeks as a fraction if she sets the denominator as 1.
To write the number of weeks as a fraction, Isabelle needs to determine the numerator and the denominator. The denominator represents the total number of equal parts into which the whole is divided. In this case, Isabelle writes the denominator as 1.
To determine the numerator, we need to understand what the whole represents. In this context, the whole represents the total number of weeks until Isabelle leaves for vacation. However, the information regarding the total number of weeks is not provided in the question. Therefore, without knowing the total number of weeks, we cannot determine the specific fraction Isabelle wants to write.