Answer:
717.44535
Step-by-step explanation:
P is the population in the beginning
r = population decrease per year = 10%
n = years = 7
P*(1-r/100)^n
1500(1-(0.10)^7
pioneermathematicscomFORMULAEFORPOPULATIONGROWTHandDECREASEformulaf779146html
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120 into a third and divide and the answer
160
D