40/100= _ of_ equal parts and the decimal _

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 ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

I’m not good at math can i have ? ?