Write the number 0.09 fraction form

What is the domain of the function f(x)=^9x

How do you find the area of a triangle

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?