Answer:
t= n*n
Explanation:
n represents the pattern number.
t represents the number of tiles.
let's use pattern #3 for n.
t=3*3 replace n with the tile number
t= 9 tile number is 9?
correct.
plug in 1 and/or 2 for n if you would like to check your work.
t=1*1
t=1
correct.
t=2*2
t=4
correct.
Formula t=n*n is solution.