Question

What is the explicit rule for the sequence? 13, 10.5, 8, 5.5, 3, 0.5,

Answer 1

Subtract 2.5 after every term.

Explanation:

13-2.5=10.5

10.5-2.5=8

So on and so forth. Therefore, the rule is subtracting 2.5 after every term.