You are given the following algorithm:

Start with a number and add 2 to it.
Double the result.
Subtract 3 from that quantity.

If an input to this function is n = 3, what is the output?

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