Final answer:
The equation that represents the number of pounds of flour and sugar weighing a total of 16 pounds is f + s = 16.
Step-by-step explanation:
To represent that the number of pounds of flour and the number of pounds of sugar weighed a total of 16 pounds, we can write the equation:
=> f + s = 16 (where f represents the number of pounds of flour and s represents the number of pounds of sugar).