Will give brainliest Question is on picture Zoom in picture

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

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Is the point (0, 8) on the x-axis or y-axis? how do you know?