About 4,000 new species of marine animals were discovered in the last 2 years. What is the unit rate of discovery?(1 point)
Responses
4,000 species2 years
Start Fraction 4,000 species over 2 years End Fraction
2,000 speciesyear
Start Fraction 2,000 species over year End Fraction
2 years4,000 species
Start Fraction 2 years over 4,000 species End Fraction
1 species2,000 years
Start Fraction 1 species over 2,000 years End Fraction
To find the unit rate of discovery, we divide the number of species discovered by the number of years.
So, the unit rate of discovery is 2,000 species/year.
To find the unit rate of discovery, you need to divide the number of new species discovered (4,000) by the time it took to discover them (2 years).
So, the unit rate of discovery is:
4,000 species / 2 years = 2,000 species/year
Therefore, the correct answer is "2,000 species/year".