The second one the unit rate is 2.05 i think
        
             
        
        
        
Use H. 30 but just to let you know the x axis is along the bottom and the y is up and down. in order to pick a scale you need to fit all of the data points into the graph
        
             
        
        
        
R could equal any number, but it has to be higher than 4, because 3+4=7.