What we do is simply replace every n with k+1. So (3n)^2 turns into (3(k+1))^2
We see that only choice A has the correct term mentioned on the left hand side, so this must be the answer.
The right hand side is treated the same way. We plug in n = k+1. Your teacher did a bit of algebraic manipulation to get what is shown for choice A.
Answer:
3/5
Step-by-step explanation:
60 out of 100 don't drive
Reduces to 3/5
less than half
13/12 - 7/10 = 23/60
{-1,1} has the greater rate of change hence, it passes through zero
