Please help me with this.

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 prime factorization of 230

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]