Answer:
C. The given function is continuous at x=4 because the limit is 2.
Step-by-step explanation:
Given the function:

We are to determine if the function is continuous at x=4.
For a function to be continuous at some value c in its domain:
must exist.
Now: at x=4
Since the two values are the same, we say that f(x) is continuous at x=4.
The correct option is C.
(t2 - 8t - 7) - (t2 + 5t - 6)
=t2 - t2 - 8t - 5t - 7 + 6
= -13t-1
The answer is 50 because 5 x 10 is 50.