Answer:
14
Step-by-step explanation:

now substitute x for -1

now solve


there is your answer! hope this helps! :)
Answer:
Unless there is more to the question than c = 2 because 30 /5 = 6 and if c is 3 than 3 = 6 so simplify if needed.
Adding the student with eight siblings will increase the class average amount of siblings because this student has more siblings than the average.
Therefore, the average number of siblings that each student has is larger than the original average.
Answer is C because there is a constant rate of change (+2) in the y-values. As x increases by 1, y increases by 2.