PLEASE HELP ME CLICK ON THIS PLEASE Hi thanks for clicking on this in order to see the image more clearly click on the attachment.
Please don't write a random answer down it took me a while to save up the points anyway good luck and if you get it right ill give you the crown and you'll get 100 more points ! :)

Ihave trouble finding the nth term of a linear sequence

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.

The base of a triangle is 8 1 3 meters and the height of the triangle is the fourth root of 16 meters meters. what is the area of the triangle?