Q64 Initial: 1/4 can covers 3/4 of a wall A full can is 4/4 so four times the amount is used when a full can is used as 4*(1/4) is 4/4. This means he can cover 4 times the amount initially covered. If you get stuck with this final step then I can explain in the comments just ask :)
you have to add all of the together so like graph number 1 add all those numbers together and then divide by how much numbers there are and that is the median
