Jim is showing his work in simplifying (−8.5 + 6.1) − 1.3. step 1: (6.1 − 8.5) − 1.3 step 2: 6.1 − (8.5 + 1.3) step 3: 6.1 − (9.8) step 4: 1.1 which statement is true?

Robert is placing sod in two square shaped areas of his backyard. one side of the first area is 7.5 feet. one side of the other area is 5.7 feet. the sod costs y dollars per square foot