To find the ratio of the vanilla cupcakes to the total number of cupcakes, we first need to calculate the total number of cupcakes Amanda bakes.
She bakes:
- 14 chocolate cupcakes
- 18 vanilla cupcakes
- 6 strawberry cupcakes
Now, let's calculate the total:
\[ \text{Total cupcakes} = 14 + 18 + 6 = 38 \]
Next, the ratio of vanilla cupcakes to the total number of cupcakes is:
\[ \text{Ratio} = \frac{\text{Number of vanilla cupcakes}}{\text{Total number of cupcakes}} = \frac{18}{38} \]
So the ratio that represents the quantity of vanilla cupcakes to the total number of cupcakes is:
\[ 18:38 \]
Thus, the correct answer is 18;38.