Answer:

Step-by-step explanation:
We have that:

Now we can find a+b

Answer:
2y = 3x + 21
y = 1.5x + 10.5
plug in, in the second equation
- 4x + (1.5x + 10.5) = 23
-4x + 1.5x + 10.5 = 23
-2.5x + 10.5 = 23
-2.5x = 12.5
x = 12.5/-2.5 = -5
y = 1.5 (-5) + 10.5 = 3
x = -5
y = 3
Answer:
Third graph, I took the test
Step-by-step explanation:
In which language?
Please tell me the language java, c++, cetc?
Answer:
B. f(x)= 
Step-by-step explanation: