Dee’s clothing is having a discount of 40% on all shirts. let x represent the regular price of any shirt in the store. write an expression that can be used to find the sale price of any shirts in the store.

Here let us say x is the regular price.

let there be discount of say "y".

Now we are given that there is 40% discount.

So sale price = regular price - discount

discount = y = 40 % of x = 0.4x

So sale price = x - 0.4x

subtracting we get,

sale price = 0.6x

Sale price = 0.6 * regular price