Answer: Keith spent 3 hours renting the surfboard.
Step-by-step explanation:
h=hour 
10.25h+25=55.75
55.75-25= 30.75
30.75/10.25= 3 
and if you want to check you can do
10.25(3)+25=
which would equal to 55.75
 
        
             
        
        
        
Domain is all the x values represented 
domain here is infinitely because it can go on forever to the left and to the right
        
             
        
        
        
Answer:
8 : 1
Step-by-step explanation:
Given ratio of sides = a : b, then
ratio of area = a² : b²
ratio of volumes = a³ : b³
Given
ratio of areas = 384 : 96 = 4 : 1 ← in simplest form, then
ratio of sides =  :
 :  = 2 : 1
 = 2 : 1
Hence
ratio of volumes = 2³ : 1³ = 8 : 1
 
        
             
        
        
        
Answer: 9 
Step-by-step explanation:
To square a number, you multiply it by itself twice.
In this case, your answer would be 3 x 3 = 9.
Hope it helps! :)