Astore pays $10 for a bracelet the markup is 115%

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

Find the values of y: 3y^3(y^2+ 2/3y)=0

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?