Answer:
he ale ready make the 126 bracelet
now he has to make 198 bracelet more
m<PQS = m<SQR
4y - 10 = 2y + 10
2y = 20
y = 10
m<PQR = m<PQS + m<SQR
= 4y - 10 + 2y + 10
= 6y
= 6•10
= 60
the answer would be three because when an exponent is on the inside of the parenthesis and one is outside too, then they are multiplied. If it wasn't, then it would be added.
Step-by-step explanation:
first one