Answer:
1.
PQ = 8
QS = 8 ( Q is the mid point of PS)
PS = ?
PQ + QS = PS
8 + 8 = PS
16 = PS
The length of PS is 16 inches
2.
OR = ?
PQ = 8
QS = 29
Let QR be x
QR + RS = QS (QR and RS are of same length because R is the midpoint of QS)
2x = 29
x = 29/2
x = 14.5
The length of QR is 14.5 inches
3.
3x - 4 = QS
3x -4 = 29
3x = 29 + 4
3x = 33
x = 33/3
x = 11