ƒ(x) = x -15x

Sale = Original - 15

ƒ(x) = 1.15x

Sale = Original -15(Original)

F(x) = x - 0.15x and Sale = Original - 0.15(original)

According to the question, the store is giving 15% off sales on all items. That means there will be a reduction of 15% in sale price of each item.

Let \( x \) represent the original price of an item.

15% of the original price\( =\frac{15}{100} \times x=0.15x \)

The sale price of an item in the store will now reduce by \( 0.15x \). This means that;

\( Sale\: Price =Original-0.15(Original) \)

But \( x \) is the original price, therefore we can substitute\( x \), wherever we see original. This gives us;

\( Sale\: Price=x-0.15x \)

Since sale price is expressed in terms of \( x \), we can also write it as a function of \( x \). That is,

\( f(x)=x-0.15x \)

**Therefore the correct answers are**

**\( f(x)=x-0.15x \)**

**and **

**\( Sale\: Price=Original-0.15(Original) \)**