Cheatgrass is an annual grass plant native to Eurasia that was unintentionally introduced into the Great Basin area of Utah and Wyoming. During the colonization phase of cheatgrass invasions, this exotic speces often exhibits geometric growth. If there are 150 chealgrass plants in a single plot of land at year 5 and the population is growing with a finite rate of increase (A) of 1.3, approximately how many plants were in the Initial invasion at time zero? Round your answer to the noarest integer. (Hint: What do you use to calculate population size at any time t, for geometric growth?) 04 O40 O 10 O 25

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