Help math problems !

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 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 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41