Twelve decreased by twice a number is the same as 8 times the sum of the number plus 4. what is the number

Answer these questions showing your work plz

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.

How much orange juice do you need to make 2 servings of lemony orange slush?