#2 and #3! need i kinda get it but

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

How much orange juice do you need to make 2 servings of lemony orange slush?

What is the output, or dependent variable of quantity? 1: x 2: f(x) 3: y