The population of oregon is about 3.8 million. the population of the whole u. s. is about 318.9 million. approximately what percentage of u. s. population lives in oregon?

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?