Christina can paint 420 square feet in 105 minutes. Which unit rate describes the scenario? 4 square feet per minute square foot per minute 1 square foot per 4 minutes 1 square foot per minute
You've gotta find the least common variable. both of these can be divided by 105. 420 divided by 105 is 4. 105 divided by 105 if 1. there are 4 square feet for every minute. The answer is A.
