Answer:
Step-by-step explanation:
5c+1+3c=61
8c+1=61
8c=62
c=7.75
 
        
             
        
        
        
5 seconds 
because that is the positive zero of that equation
        
                    
             
        
        
        
Answer:
Here is what you do. Make it into vertex form and then whatever the x factor is is the growth factor 
 
        
             
        
        
        
Answer:n
Step-by-step explanation:
n
 
        
             
        
        
        
For part A add up all your students then add up all your students that like bike riding and skating (80+90) divide that by the total number of students who took the survey
For Part be put 20+40  over the toatl number of student then simplify