a. Callie ordered 4 items online. She is charged $2.37 per pound per shipping. The items weighed 3.2 Ibs., 4.6 1bs., 9.2 Ibs. and 1.5 Ibs. How much will be charged for shipping? (Round to the nearest cent). b. Penny is making barrettes for her online business. Each barrette needs 2.3 inches of ribbon. If Penny has 4 feet of ribbon, how many barrettes can she make? c. Glen visits the grocery store once a week for groceries. The amount he spent on five separate visits was $52.35, $36.93, $44.79, $88.98, $55.22. What is the average amount Glen spent per week over these five weeks