It takes 12 hours for a single hose to fill a large vat. when a second hose is added, the vat can be filled in 4 hours. how many hours are required for the second hose working alone to fill the vat? enter your answer in the box.

Its 6 hours.

I should probably explain it, the reason for this is mainly just by dividing the fact that adding the other hose takes away 8 hours of work we can deduce that the amount of water it can put out can do it 2 times faster than the normal hose so the answer is 6

o= 4(i) +3

step-by-step explanation:

o is your output value and i is your input value. so, for example, if we stuck 7 in as our input, we would first multiply by 4 ( pemdas ), which equals 28. then we would add 3 to 28, for a total output of 31. this may not be a graph, but, it is a way to solve your formula..

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value