How do u find the three term sequence in this problem -6,-2,0,1,3/4,

How do i do this activity, is appreciated

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.

Cody ran nine miles on his first day of training. the next day he ran 1/8 that distance. how far did he run the second day?