Workers regularly survey the wall to see where it needs repairs to protect the capital from Mongol attacks. It takes them 30 minutes to survey 150 square feet. How many square feet do they survey per minute?
CCSS: 6.RP.A.2, 6.RP.A.3.B, MP1, MP2, MP3
TEKS: 6.4B, 7.4B, 7.4D