# It costs $7.50 to enter a petting zoo. Each cup of food to feed the it animals is$2.50. If you have $12.50, how many cups can you buy, using a bar diagram to solve arithmetically? ##### 1 Answer Jun 12, 2018 $2$#### Explanation: You need to form an equation to solve these kinds of problems. In this case: $2.50 x + 7.50 = 12.50$The constant $7.50$comes from the price to enter the zoo which is only paid once. The coefficient of $2.50$is paid each time food is bought. $12.50$is the amount of money you have, so the amount paid cannot exceed that. Then, you solve for $x$by subtracting $7.50$from each side, then dividing by $2.50$: $2.50 x + 7.50 = 12.50$$2.50 x = 5$$x = 2\$

You can graph this function on a line graph, so I suppose you could make a bar graph out of it too.