If your looking for basically the definition of ratio it means, lets say we have 2 can of milks, and 3 cans of cookies, if it asks find the ratio of milks first then cans it is 2:3, or if it asks find the ratio of cans of milk to cookies, which is 3:2 or part to whole which means 3+2 or 2+3= 5 is whole and if they say part would be milk then 2:5 or if its cans of cookies to whole its, 3:5. I hope this helps ask me anything that you didn’t understand!
PEMDAS A. 4*4-4-4=16-4-4=12-4=8 true B. 4*4*4-4=16*4-4=64-4=60, not 8 false C. 4*4+4-4=16+0=16, not 8, incorect D. 4(4+4)-4=4(8)-4=32-4=28, not 8 incorrect
