Simplify 5 xa x 5 x a​

Triangle xyz has vertices x(1,3), y(0,0)

If a line is defined by the equation y = 5x + 2, what is the slope?

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?