Answer:
1 and 2 have already been done.
See below for the answers to 4 to 6.
Step-by-step explanation:
7. Finding the limit as x --> 2 of the function:
(2^(x + 2) - 16) / (4^x -16)
= 4(2^x - 4) / (2^x -4)(2^x + 4)
= 4 / (2^x + 4)
When x = 2 this = 4/8 = 0.5
The limit is the same whether you approach 2 from below or above.
So k = 0.5.
