What is 15min in seconds

What are the sotions to the quadratic equation 9x^2=4

What is the solution of log2  (3x  -  7)  =  3? 4 5

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?