The swimming pool is open when the high temperature is higher than
2
0
∘
c
20
∘
c20, degrees, start text, c, end text. lainey tried to swim on monday and thursday (which was
3
33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was
3
0
∘
c
30
∘
c30, degrees, start text, c, end text on monday, but decreased at a constant rate in the next
3
33 days.