Question

Evaluate f(–2) in the given function below.
http://media.education2020.com/evresources/2003-21-05-00-00_files/i0150000.jpg


A.
–6
B.
–3
C.
2
D.
–9

Answer 1

-2 is between [-5,3)
so f(x)=3x-3 in this domain
so
put x=-2 into f(x)

Answer 2

put it into the first or second problem?

Answer 3

when x=-2
-5<=x<3 so
f(x)=3x-3
now x=-2
f(-2)=3*(-2)-3=-6-3=-9

Answer 4

for example if u want f(4)
4 is in interval [3,12]
so use f(x)=x+4
and f(4)=4+4

Answer 5

oh okay I understand now! thank you! could you help me with one similar to this one?

Answer 6

sure

Answer 7

What is the domain of the piecewise function below? http://media.education2020.com/evresources/2003-21-05-00-00_files/i0310000.jpg



A.
all real numbers between –2 and 3
B.
all real numbers less than –2
C.
all real numbers greater than or equal to 3
D.
all real numbers

Answer 8

\[(-\infty,-2) \cup [-2,3) \cup [3,+\infty) =\]
all of real numbers