Please answer this correctly

The total number of students in gina’s after-school program is .the number of students who have 4 or more siblings is .reset next

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)?