3x^2 + 90 = 360 work out the value of x

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?

Afootball is throw by a quarterback to a receiver

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i