Anne found the 10th term of the following sequence. Her steps are shown below. 3, 7, 11, 15, … 1. common difference = 4, a1 = 3 2. an = 3 + (n - 1)4 3. an = 3 + 4n - 4 4. an = 4n - 1 5. a10 = 4(10) – 1 6. a10 = 39 Analyze Anne’s work. Is she correct? If not, what was her mistake? Yes, she is correct. No, she needed to find the common ratio because it is a geometric sequence. No, she substituted the wrong values into the rule to find the equation that represented the sequence. No, she solved for the 10th term incorrectly.