I need help with this please

The surface area of the triangular prism is .

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school

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?