The table shows values of n and f(n) for the equation f(n) = n(n+3)
2.
f(n)
1
2
2
5
3
9
4
?
What is the value of f(n) when n =
= 42
A 12
B. 13
C. 14
D. 28
E

I looked at the the picture and the answer is A. 12

I guess the 2 was supposed to be a question mark judging by the picture...

astronomers is your final answer! : )

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.