What is the answer to this screen shot

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?

Graph the equationy= x+3[tex]y = x + 3[/tex]

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?