Write an inequality of -4 -3 -2 0 -1 0 1

The chart below shows the distribution of weeds in yard

The sum of two numbers is 86, and their difference is 20. find the two numbers

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?