Lesson 8 Practice Problems 1. A sequence is defined by
S(0) =
-20,f(n) = f(n − 1) - 5 for n(equal or greater than)1.

a. Explain why f(1) = -20 - 5.

b. Explain why f(3) = -20 - 5 - 5 - 5.

c. Complete the expression: f(10) = -20 -
Explain your reasoning.