Pierre's parents ordered some pizzas for a party. 4.5 pizzas were eaten at the party. there were at least 5 1/2 whole pizzas left over. how many pizzas did pierre's parents order?

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters

Which shows a reasonable estimation for 124% of 42 using the distributive property?