You HAVE to be joking me

I’m risking points just cause I’m mad AH

2(n-1)+4n=2(3n-1)n=0no solutioninfinitely many solutions n= - 4 !

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

What is the rate of change of a line that passes through (2,-5) and (6,-2)?