Which sequence is generated by the function f (n + 1) = f (n) - 2 for f (1) = 10? a. - 10, - 12, - 14, - 16, - 18, b. - 2, 8, 18, 28, 38, c. 8, 18, 28, 38, 48, d. 10, 8, 6, 4, 2,

For this item, f (1) is already given as 10. The calculations for the next terms are as follows,

f (2) = f (1) - 2 = 10 - 2 = 8

f (3) = f (2) - 2 = 8 - 2 = 6

f (4) = f (3) - 2 = 6 - 2 = 4

f (5) = f (4) - 2 = 4 - 2 = 2

Thus, the answer is letter D.