Astorage room measures 8 1/2 feet by 5 feet by 8 and 1/2 ft what is the volume of the storage room

What is the product of the radical expression. (7-2square root) (8+2 square root)

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2

Which of these side lengths could form a triangle a) 2 cm , 2 cm , 4 cm b) 3 cm , 5 cm , 10 cm c) 3 cm , 4 cm , 5 cm d) 4 cm , 8 cm , 15 cm