Choose the property of real numbers that justifies the equation

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

In a young single person's monthly budget, $150 is spent on food, $175 is spent on housing, and $175 is spend on other items. suppose you drew a circle graph to represent this information, what percent of the graph represents housing?

Write as a product: ac^2–ad+c^3–cd–bc^2+bd