A teacher asked four of her students to write an expression for the problem below. All products in a store are being discounted by 25%. Let x be the original price of a product in the store. What is the sale price of that product in the store? Their responses are shown below:
Joseph: 0.75x
Thomas: 1.25x
Sandra: x - 0.25x
Angela: x + 0.25x
Whose response is correct?
Sandra only
Thomas only
Joseph and Sandra
Thomas and Angela