Given:
There are given that x is the price before the increase and y are the after the increased price.
Step-by-step explanation:
According to the question:
There are also given that 15% increase in their price.
So,
For the new price:
![x+15\%x](https://img.qammunity.org/2023/formulas/mathematics/college/um2a7izxlrplb0zro89wqx2cxcnkx4gp5g.png)
Then,
![x+(15)/(100)x=x+0.15x](https://img.qammunity.org/2023/formulas/mathematics/college/3zxsuejb9zfx9fjydubumz2ry7vfxxfxnn.png)
Now,
y is the price after the increase,
So,
The price equation of the new price is:
![y=x+0.15x](https://img.qammunity.org/2023/formulas/mathematics/college/div9360eof31brpikxtn013zplkhqsvq5b.png)
Final answer:
Hence, the correct option is A and C, and E.