Answer:
5.35
Step-by-step explanation:
(a)

= 400
(b)


(c) Only the positive solution makes sense because you cannot have a negative side length.
(d) Since one side of the painting is 20 inches, all four sides together will be 20*4 = 80 inches
Answer:
A decrease of 3.5%
Step-by-step explanation:
since 36-8 is 28, it went down a bit so it would be 3.5%
The anwser is 930 because 900 plus 30 is 930