15. Simplify:
(-72)= (+36)[(+144) = (+72){(+6)+(+20)-(+2)}]
}]​

21

jk it's 20

step-by-step explanation:

the first option is the answer.

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.