Mixing 4 ml of red paint and 15 ml yellow paint makes orange paint. how much red would be needed if you use 100 ml of yellow paint? show work

Which function can be used to model the monthly profit for x trinkets produced? f(x) = –4(x – 50)(x – 250) f(x) = (x – 50)(x – 250) f(x) = 28(x + 50)(x + 250) f(x) = (x + 50)(x + 250)