Frank and francis are building houses in a computer game . frank started with 630 bricks and is using his bricks at a rate of 15 bricks per minute. the graph shows the number of bricks that francis has remaining as a function of time

Francis because when you put Franks into an equation it is 630-15x=y and you have to make the x = 20 so you multiply 15 by 20 to get 300 then you subtract 300 from 630 to get 330. And on Francis' graph it shows that she has 320 left so Francis has less. Hope that helps!!