Final answer:
The fraction of the $20 that Delores spent, represented as a decimal, is 0.35. This is found by dividing the amount spent ($7.00) by the original amount ($20.00).
Step-by-step explanation:
The question from the student asks about converting the amount Delores spent into a decimal fraction of the total money she started with. To find the fraction in decimal form of the $20 Delores spent, we divide the amount spent, $7.00, by the original amount of $20.00.
The calculation is: $7.00 ÷ $20.00 = 0.35
Therefore, the correct decimal that represents the fraction of the $20 Delores spent is 0.35.