Answer:
Third option:
and 
Step-by-step explanation:
Given:

For a modulus function, if
, then,

Here,
, 
∴ 
Therefore, the third option is the correct answer as the graph has
values as -2 and 2
Answer:
B) [1, 4, 7]
Step-by-step explanation:
Substitute 0 in
f(0) = 3(0) + 1
Multiple
f(0) = 0 + 1
f(0) = 1
Substitute 1 in
f(1) = 3(1) + 1
f(1) = 3 + 1
f(1) = 4
Substitute 2 in
f(2) = 3(2) + 1
2 = 6 + 1
f(2) = 7
D) Requires a linked bank acount