What did kermit the frog say and jim henson's funeral ill give brainliest if you get it right

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 slope of the equation y =

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10