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
1 species2,000 years
Start Fraction 1 species over 2,000 years End Fraction
2 years4,000 species
Start Fraction 2 years over 4,000 species End Fraction
4,000 species2 years
Start Fraction 4,000 species over 2 years End Fraction
2,000 speciesyear
Start Fraction 2,000 species over 1 year End Fraction
The correct unit rate of discovery would be 2,000 species per year.
To find the unit rate of discovery, we need to divide the number of species discovered by the number of years. In this case, 4,000 new species were discovered in the last 2 years. So the unit rate of discovery is:
Start Fraction 4,000 species over 2 years End Fraction
This means that, on average, 2,000 new species are discovered per year.