What are the domain and range of f(x) = 2|x – 4| + 3 ?

Solve 2^x=32 and rewrite this equation in a logarithmic form

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?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle