Answer:
TN -20+4
Step-by-step explanation:
T5= 18(5)-12
t6= 18 ( 6) -12
tn = 18 (7)-12
Answer: 220
Step-by-step explanation:
When we wanto to create a group of K elements for a set of N elements (where the order of the K elements does not matter, so we do not considerate the permutations of the K elements), the number of possible combinations is:

Here N = 12 and K = 3

So there are 220 possible combinations
Which graph? I can not see any graph in there