Answer:
My answer to the question is 34.0
R=16
J=32
20+40(which is 20×2)=60
20-4=16
16×2=32
the scale factor is 2.
because
if you look at the length <em>AL</em><em> </em>in the smaller shape, it is 2 squares.
now if you look at the length <em>AL</em><em> </em>in the enlarged shape, it is 4 squares.
to find the scale factor, do 4 ÷ 2 which is 2.
therefore the scale factor is 2
3.30 x 5 = 16.50
4.30 x 7 = 30.10
30.10 + 16.50 = $46.60