R - 8 = 39 What is the answer

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

Question 27 of 28 1 point what is the slope of the line shown below? (3,-2) (2,-4)

7x^2-9x+5=0 find the discriminant and number of real solutions