Darius is 9 feet away from his car when he begins walking directly away from his car at a constant speed of 3 feet per second. If Darius is 26 feet from his car, how many seconds have elapsed since he started walking away from his car?

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.