Answer:
4
Step-by-step explanation:
The perimeter of each square window is 4 times the length of one side, so is 20 feet.
80 feet can be divided into 80/20 = 4 sections of 20 feet each.
Shelly has enough lights to surround 4 windows.
Answer:
75
Step-by-step explanation:
The answer is 3,600
6(245) + 15(142)
1 + 3 + 5 + 7 + ... + 997
1, 3, 7, ... , 997 are terms of an arithmetic sequence

Answer: 1 + 3 + 5 + 7 + ... + 997 = 249,001.