figure 1 has 8 tiles
figure 2 has 14 tiles
figure 3 has 22 tiles
I'm guessing the 2 on the side hints for us to do something+2
the inside parts are
figure 1: 6
figure 2: 12
figure 3: 20
hmm, the width is 1+number figure
height is 2+figure number
so therefor, figure x is (1+x)(2+x)+2
so the rule is figure x has (x+1)(x+2)+2 or [tex]x^2+3x+4[/tex] tiles
a. the rule is figure x has (x+1)(x+2)+2 or [tex]x^2+3x+4[/tex] tiles
b. it is quadratic because it has [tex]x^2[/tex] in it
