The average low temperature would be 5+8+6+5+10+7+1 all divided by 7, so the answer is 6° celsius.
Divide the area by the length given. The area expression can be factored down. Here’s my work
55 -10 = 452x2 = 47x7 = 494x4 = 1621 + 1 = 2277- 10 = 67x+30=100 = 70 You gave the answers. ???