Answer:
A=50
Step-by-step explanation:
assuming you mean 100-A+20-70=0
you need to solve for A, which means add all your numbers together and isolate A.
-A+50=0
A=50
Answer:
it is a function
Step-by-step explanation:
the input is not repeated
Functions and equations
We have that:

Let's name each side of it with f(x) and g(x):
Then, we have that:

Then, the answer is C
<h2>
Answer: C</h2>
Answer:
i think its rational.
Step-by-step explanation: