The length of the prism is 9
Answer:
-4*20+3*190=490
2*20+190=230
-2*20-3*190=-610
f(1) = 2*1 - 1 = 1
f(0) = 2*0 - 1 = -1
f(-1) = 2*-1 - 1 = -3
f(2) = 2*2 - 1 = 3
