TWO QUESTIONS
A runner exerting a running force of 305 N to the right is met with an air resistance force of 35 N to the left. What is the net force of the runner?

305 N
280 N
270 N
205 N

A pushing force of 3 N to the right is applied to a book on a table. A frictional force of 7 N is applied in the opposite direction (left). In which direction will the book move?

to the right
to the left
stay at rest