Answer:
The answer is C because there can only be one output to one input
Step-by-step explanation:
The answer is c
2 + 3 = 5
-2 (2) + 4 (3) = 8
-4 + 12 = 8
Multiple by any number over itself (ie. 3/3) so like 18/30, 12/20, etc.
The researches should send out surveys via mail to a population of registered voters. Although the responses will come slowly, they will be more accurate.