It’s b) an =-125(-^2/5)^n
Answer:
after 13 months
Step-by-step explanation:
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1475-500=975
975÷75=13
so 13 months
F(-5) just means that your substituting the number -5 for every x value. So if you have x+1 this would be -5+1 which is -4
The first option is correct