How many passwords can be formed using six numbers if the first and last number cannot be zero?

5(-9w) put expression in distributive property

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

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?