Answer:

Step-by-step explanation:
Since these are like-terms, they can be added together.
7z + 7z = 14z
Answer:
I think it's the second one. 5.6487
Step-by-step explanation:
y = mx + b
I mean, thats the formula? :/
i saw its C because where the solutions are located. sorry if it’s wrong, i’m rusty
#2 is C because you are looking at the Y-axis and i don't know if you needed help for #3 but if you did I can't see the question.