Answer:
1. x+4, x+3, x+1 - all 3 sides
x+4 + x+3 + x+1 = 17
3x + 8 = 17
3x = 17 - 8
3x = 9
x = 3
Side BC = x + 3 = 3 + 3 = 6 in
Side CD = x + 4 = 3 + 4 = 7 in
Side AB = x + 1 = 3 + 1 = 4 in
2. Side BS = x, side SY = 4 + x,side BY=x+2
BS + SY + BY = 21ft
x + 4 + x + x + 2 = 21
3x +6 = 21
3x = 21- 6
3x = 15
x = 5
Side bs = 5ft
Side sy = 9ft
Side by = 7ft
3. x +5+x - 1 + x +8 = 36 yd
3x + 12 = 36 yd
3x = 36-12
3x = 24yd
x = 8 yd
PQ = 16yd
Qr = 7 yd
Pr = 13 yd
4. This also should be done in the same method as above
I hope I helped u