Awell-mixed lagoon with volume 1,500 m has been received a steady flow of a conservative waste at a rate of 120 m3/day for a long enough time to assume that steady- state conditions apply. the waste entering the lagoon has a concentration of 12 mg/l. i. what is the concentration of pollutant in the effluent leaving the lagoon? ii. if the input waste concentration suddenly increases to 120mg/l, what would the concentration in the effluent be 7 days later?

215.92 dollars is the answer

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?

what level of math? also i don't need to be paid if i can you.