Try this explanation/solution:
a) the system which describes this situation is:

b) the solution of the system made up:

Answer:
f^-1(x) = x+1
Step-by-step explanation:
y = x-1
x = y-1
y = x+1
Each number is 4 times the previous number"
2*4 = 8
8*4 = 32
32*4 = 128
so next 3 are:
128 * 4 = 512
512*4 = 2048
2048 * 4 = 8192
512 , 2048, 8192
Answer:
.878787.. to a fraction is 29/33
Step-by-step explanation:
= 87/99
Simplify 87/99, which is 29/33