Answer:
3a = 
Step-by-step explanation:
Given
2a + 4b = 5 ← substitute a = 3b into the equation
2(3b) + 4b = 5
6b + 4b = 5
10b = 5 ( divide both sides by 10 )
b =
=
Now
a = 3b = 3 ×
=
, thus
3a = 3 ×
= 
Answer:
-3 (removable), +5
Step-by-step explanation:
Maybe you have ...

This will have discontinuities (points where the function is undefined) at ...
The discontinuity as x = -3 is removable by defining f(-3) = -1/8.
The last one because for every functoin pair their is exactly one output value fo the function pair.
Answer:
c
Step-by-step explanation: