2(x+-9)
2(x-9)
Distribute
2x-18 is the simplified expression
Simply substitute the value of
3
given. In other words,
f
(
3
)
is the function of
f
(
x
)
, however, in this case,
x
is
3
f
(
3
)
=
3
(
3
)
−
4
Distribute
3
through the parenthesis
f
(
3
)
=
9
−
4
Simplify
f
(
3
)
=
5
Answer:
x = 14, BC = 27, CD = 61, BD = 88
Step-by-step explanation:
