Question

what is the first term, common difference, and 16th term

Answer 1

Answer:

The 1st term is -67

Step-by-step explanation:

I. When Sn = $\frac{n}{2}$($a_{1} + a_{n}$)

   If  Sn = 124, n = 8 and $a_{n}$ = 98

                124 = 8/2(a + 98)

                124 = 4(a + 98)

                124 = 4a + 392

                124 - 392 = 4a

                -268/4 = a

                -67 = $a_{1}$

Hope that help :D