Question

Find s4 when sn = 28 - 7n, where S ="

Option a: 14
Option b: 0
Option c: -28
Option d: 21

Answer 1

To find s4, substitute n=4 into the given formula sn = 28 - 7n. The value of s4 is 0.

Step-by-step explanation:

To find s4, we substitute n=4 into the given formula sn = 28 - 7n.

Therefore, s4 = 28 - 7(4) = 28 - 28 = 0.

So, the value of s4 is 0.