In order to solve this problem, a big help would be knowing the infinite geometric series equation. As explained in the picture to solve your a sub 1 and ratio is pretty simple. You can refer back to earlier concepts. To find a sub 1, it would just be the first term in the series. To find the ratio you must divide the second term by the first term. Although the whole number is left out throughout the problem, remember to add it in at the end and only then well you have your answer to the problem.
