1900 : 14/25 = 0.56
1910 : 29/50 = 0.58
1920 : 53/100 = 0.53
1930 : 13/20 = 0.65
1940 : 3/5 = 0.6
in order of increasing ring width (least to greatest) : 1920, 1900, 1910, 1940, 1930
which year was the hottest : 1930
how do u know ....because the problem states that a greater width corresponds to a higher average temperature. So the one with the greatest width will have the hottest temperature
which year was coldest : 1920
how do u know....greater width, higher temperature. So the one with the smallest width will have the lowest temperature
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third and fourth level below ground level....-3 and -4
ground level ...0
first and fourth level above ground.....1 and 4
the reasoning : if ground level is 0, then anything above ground level will have positive numbers and any level below ground level will have negative numbers
graph : solid circle on -4, solid circle on 4, shading in between...I guess, unless they just want you to plot ur points
the order in which they will be searched : -4,-3,0,1,4
if she takes the stairs....
-4 to -3 is 1 flight of stairs
-3 to 0 is 3 flights of stairs
0 to 1 = 1 flight of stairs
1 to 4 is 3 flights of stairs
for a total of : 8 flights of stairs