8+[5×6]= i need answer asap pls

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.

Ineed ! i can’t figure out this graph

Marco states that 7.696696669…… is a rational number because it is a repeating decimal. is he correct? justify your answer.