A large tank is partially filled with a solution. The tank has a faucet that allows solution to enter the tank at a rate of 16-3/4 liters per minute. The tank also has a drain that allows solution to leave the tank at a rate of
19-4/5 liters per minute.

(a) What expression represents the change in volume of solution in the tank in 1 minute?

(b) What is the change in volume of the solution after 15 seconds?

(c) What does the change in volume after 15 seconds mean in the real world

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle.what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle.what is the measure of angle a? enter your answer in the box.m∠a= 3.)quadrilateral abcd is inscribed in this circle.what is the measure of angle b? enter your answer in the box.m∠b= °4.)quadrilateral abcd is inscribed in this circle.what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle.what is the measure of angle c? enter your answer in the box.°