Step-by-step explanation:

Firstly we have to take variables to L.H.S and numbers to R.H.S

Hope it helps
Answer:
72 pi + 48 pi= 120pi (not sure if I am right tho)
Step-by-step explanation:
Answer:
n=2/3, -1/4
Step-by-step explanation:
Let c represent the cost and r represent the number of rooms, then
a.) c = 22r
b.) 200 = 22r
r = 200/22 = 9.09 ≈ 9 rooms
c.) 200 - 40 = 22r
r = 160/22 = 7.27 ≈ 7 rooms
Answer:
A. 125 degrees
Step-by-step explanation: