Is 75 a prime, composite, or neither number

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

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships

Ineed with math stuff it involves graphs