Dr. Jane is studying the growing population of a species of jellyfish in a body of water. Each year, she records the population
of jellyfish. The first year, she recorded a population of 15 jellyfish. Every following year, the population increased by four times the previous year’s population. At this rate, what will be the jellyfish population in the 9th year of her study?
2 answers:
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x < -
add to both sides
- 3x > +
- 3x > ( divide both sides by - 3 )
note that when we divide/ multiply by a negative quantity we must reverse the inequality symbol
x < -
