Answer:
Number of gallons of strawberries will she have picked in 2 hours is, 3
Step-by-step explanation:
Unit rate defined as the rate are expressed as a quantity of 1, such as 4 feet per second or 6 miles per hour, they are called unit rates.
Given the statement: Jen picked 3/4 of a gallon of strawberries in half an hour.
⇒ In
hour Jen picked
gallon of strawberries.
Unit rate per hour = 
To find the number of gallons will she have picked in 2 hours.

=
Therefore, the number of gallons will she have picked in 2 hours is, 3