Tina sells homemade crafts online. Her online subscription fee is $19.99. She charges $12.50 per
item plus 20% shipping and handling. Materials for
each item cost her $1.75 and shipping costs $1.50
per item. Tina will break even after she sells enough
items to pay for all her costs. How many items does
she need to sell to break even?

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

hdjd

step-by-step explanation: