How do you do (f +g)(x) if f(x) is equal to x/x+1 and g(x) is equal to 2x+1?

Your company will replace the asphalt roofs on all the buildings at the factory complex shown below. the buildings have flat roofs. you charge according to the total roof area. what is this area, in square yards?

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.

Who can me with this algebra for your guys.