Fine the x and y int of the line -10x-6y=120

If eh = hg and hg=16, find the diameter of k

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

8.74 rounded to the nearest whole number