? I NEED HELP

This is fractions casey shared a pizza with some friends. they each ate 1 third of the pizza. how many people shared the pizza

Geometry answer picture question pls . reason and statements

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?