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Tree enthusiasts use a point system to compare trees. They assign a number of points for each inch of circumference, foot of height, and foot of crown spread. The table shows the points in each category and the total points for three of South Carolina's trees. How many points are assigned to one unit of each measurement?

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meerkat18

                    Circumference(in): Height(ft): Crown Spread (ft): Total Points

Angel Oak:           306:                     65:                 144:                      407

Green Ash:           181:                  143:                    96:                      348

Redwood:            168:                   105:                    44:                     284

Let circumference be x ; height be y ; crown spread be z.
306x + 65y + 144z = 407
181x + 143y + 96z = 348

168x + 105y +44z = 248

Choices:
a. circumference: 1 point; height: 1 point; crown spread: 0.75 point

b. circumference: 2 point;s height: 1 point; crown spread: 0.25 point
c. circumference: 1 point; height: 2 points; crown spread: 0.25 point
d. circumference: 1 point; height: 1 point; crown spread: 0.25 point

Answer would be Choice D.
306(1) + 65(1) + 144(0.25) = 407 
181(1) + 143(1) + 96(0.25) = 348 
168(1) + 105(1) +44(0.25) = 248 

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