The first 3 figures in a pattern are shown.
PART 1:Which of the following functions represents f(n), the number of small squares in figure n?
A) f(n) = 2n^2
B) f(n) = (n + 4) ^2
C) f(n) = 5n + 4
D) f(n) =n^2 + 4
PART 2:How many small squares will be in the 15th figure?
A) 60
B) 79
C) 229
D) 361
