Answer:
20
Step-by-step explanation:

Answer:
C
Step-by-step explanation:
By tracing the figure, we see that we go around a semicricle twice and go in a straight path twice. So the perimeter of this figure consists of two semicircles and two line segments, hence the answer is C.
Answer:
Answer -2/1
Step-by-step explanation:Slope is the number in front of x
Answer:
(c) 4
Step-by-step explanation:
Given
The piecewise function
Required
The value in f(x) domain
The domain of f(x) is:
and 
Combine both inequalities:

List the values of the inequality

From the list of given options
Only 4 is among the domain
Others are not