Deonta earned $8.50 per hour plus an additional $100 in tips waiting tables on sunday he earned at least $150 in all write an inequality and find the minimum number of hours , to the nearest hour that Deonta worked on Sunday , help please!!

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.