Final answer:
The equation that represents this situation is 4x + 8y = 30, where x represents the number of pounds of strawberries sold at $10, and y represents the number of pounds of strawberries sold at $20.
Step-by-step explanation:
The equation that represents this situation is:
4x + 8y = 30
where x represents the number of pounds of strawberries sold at $10, and y represents the number of pounds of strawberries sold at $20.
For example, if Lance sells 2 pounds of strawberries at $10 and 3 pounds of strawberries at $20, we can substitute these values into the equation:
4(2) + 8(3) = 30
8 + 24 = 30
Therefore, the equation is satisfied, and the equation represents the given situation.