It would take him 58.2 seconds to fill 14 glasses and it would take him 87.3 seconds to fill 21 glasses
What exactly are you asking for....?
Y = 3x + 4
y = -x - 4
3x + 4 = -x - 4
3x + x = -4 - 4
4x = -8
x = -8/4
x = -2
y = 3x + 4
y = 3(-2) + 4
y = -6 + 4
y = -2
solution is (-2,-2) <==
One red ribbon, 6 green ribbons and 3 blue ribbons total together would be 10 ribbons