Atank contains 8,000 l of brine with 18 kg of dissolved salt. pure water enters the tank at a rate of 80 l/min. the solution is kept thoroughly mixed and drains from the tank at the same rate. (a) how much salt is in the tank after t minutes? y = kg (b) how much salt is in the tank after 30 minutes? (round your answer to one decimal place.)

i think asking google will you get the answer to that question

correct answer:

b.(19,-2)

the answer is:

the answer is:

to solve the problem, we need to remember the quotient of power property, it's defined by the following relation:

if we have a quotienf of powers that have the same base, we need to keep the same base and subtract the exponent of the denominator power to the exponent of the numerator power.

so, we are given the expression:

then, calculating we have:

hence, the answer is:

have a nice day!