It’s might be 42 i’m not sure
-1/3=-3-/9
-4/9-3/9=-7/9
z-7/9=5/9
7/9+5/9=12/9
z=1 1/3
Answer:
C can I be brainliest
Step-by-step explanation:
The characteristic of a geometric progression is that the ratio of a term and its consecutive term remains the same. Thus, if he can show that f(n)/f(n-1) remains constant, he can prove f(x) to be a geometric progression.
The third option is correct.
So let's say he was earring x before his raise. That means that:
x times 1.09 = 654 (1.09 represents 100% (this is the 1.0) of his original salary plus 9% (this is the .09) his raise.
So,
1.09x = 654; now divide both sides by 1.09 to isolate and solve for x, and you get x = $600.