A sidewalk is 15cm high, 30m wide and 60m long. The volume of concrete that was used to pour the sidewalk is A. 270 m3
B. 2700 cm3
C. 27 m3
D. 270000 cm3​

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.