Answer:
box 1
y/x = 5/20 =1/4
y/x = 7/35 = 1/5
this is not proportion y/x is not the same
box 2
y/x = 15/40 = 3/8
y/x = 21/56 = 3/8
y/x = 27/72 = 3/8
this is proportional
y is 3/8 times x
Step-by-step explanation:
Area = length x width
Area = (3width - 13) x width
Area = 3 width^2 -13width
56 = 3width^2 -13 width
Width = 7
Length = (3 *7) -13 = 8
thank you
its 12 :)
hope this helps you
