Julian O. answered 10/29/19
St. John’s University Graduate For Mathematics Tutoring
Hello, Grace! I am more than happy to help you with this problem. In general, the arithmetic sequence formula is an = a1 + (n - 1)d, where n is the term number, a1 is the first term of the sequence, and d is the common difference. Therefore, the formula for the nth term that you provided is an = 1.7 + (n - 1)0.5.