Answer:
hope this helps you!!!!!!!!!!
a) perimeter = a+b+c +d
=> x+7+2x+2+8x+x+10
=> 12x+19
b) perimeter of part a when x = 4
=> x+7
=> 4+7
=> 11
c) perimeter of part a when x = 2
=> 2+7
=> 9
d) perimeter = a+b+c+d
=> x²+4x+8+2x²+x
=> 3x²+5x+8
