Answer:
if my calculator is not wrong Is 21
20 is not a perfect square.
36 = 6 times 6.
49 = 7 times 7.
68 is not a perfect square.
121 = 11 times 11.
400 = 20 times 20.
Hope this helps
48% error because it would be 24% if it was out of 100 but u have to double it becuase its out of 200
Y=5x+2 is a linear function because it increases at a constant rate. Also, it is a straight line, unlike quadratic and exponential functions.
=0 is the answer to the equation