I'm having trouble figuring out how to determine derivatives of exponential functions. The textbook is no help (as usual) because none of the examples are even close to the questions in the homework. If anyone could help me with these I'd really appreciate it, exams are coming up and I just want to make sure im rock solid in this stuff!

It was just these 3 that are being a pain in my arse!

I'd really appreciate any help anyone has to offer! thanks in advance!