Answer:
D
Step-by-step explanation: since it is a open dot to the right it’s x>-3 open dot means less than or greater than going to right means greater than
Answer:
4
Step-by-step explanation:
because 2 1/2 times 4=10
Given the function

The two points concerning the domain are:
- The content of a square root must be non-negative
- The denominator can't be zero
Nevertheless, the content of the square root is
, which is always positive, so it's not a problem.
The denominator, which is x, can't be zero, so we can't have 
So, the domain of the function is

As M is a point of tangency, KN and MN are perpendicular.
Therefore : KN² = KM² + MN²
(radius + NP)² = radius² + 336²
(radius + 294)² = radius² + 336²
radius² + 2*294*radius + 294² = radius² + 336²
588radius = 336² - 294²
radius = 26460/588
radius = 45
Hope that clear and helpful