–2(5a + 3) + 2(6a – 3) can y'all simplify this please

Arandom number generator is used to model the patterns of animals in the wild this type of study is called

Let r = 3. what is the value of r + 58?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?