Answer:
9, 4, - 1, - 6, - 11
Explanation:
to generate the first 5 terms, substitute n = 1, 2, 3, 4, 5 into f(n)
f(1) = 9 - 5(1 - 1) = 9 - 5(0) = 9 - 0 = 9
f(2) = 9 - 5(2 - 1) = 9 - 5(1) = 9 - 5 = 4
f(3) = 9 - 5(3 - 1) = 9 - 5(2) = 9 - 10 = - 1
f(4) = 9 - 5(4 - 1) = 9 - 5(3) = 9 - 15 = - 6
f(5) = 9 - 5(5 - 1) = 9 - 5(4) = 9 - 20 = - 11
the first 5 numbers are 9 , 4 , - 1 , - 6 , - 11