For this case we have that the variable "k" represents the floor area of Melanie's kitchen.
We have that the floor area of the room is 1.5 times the floor area of the kitchen, then, we propose the following function to find the floor area of the room:
![A (k) = 1.5k\\A (k) = k (1 + 0.5) = k + 0.5k = 1.5k](https://img.qammunity.org/2020/formulas/mathematics/middle-school/o9sdnbij30cheoek71eaxjg5fxzy61k733.png)
Answer:
Option A and D