Hey heidihorcrux.
Show us any working out and ideas that you've had.
The first question is:
4^x-2^(x+1)=3 solve by writing as a quadratic of 2^x
The second question is:
Using Newtons Law of cooling, the ambient temp is 60 degrees and k= 0.1947, if a body is 72 degrees how many hours ago did the person die?