Answer:
I don't know the answer to the first one, but the second one's answer is 8.625
Step-by-step explanation:
1.5*2.5 + 1.5*2.5 + (1.5*1/5)/2 = 3.75 + 3.75 + 2.25/2 = 
7.5 + 1.125 = 8.625
 
        
             
        
        
        
Mark is 20. 55 - 15 = 40, 40 / 2 = 20. Mark is 20
        
                    
             
        
        
        
Answer:
See diagram
Step-by-step explanation:
First, consider the graph of the parent function  This function has the period
 This function has the period 
Rewrite the function  as
 as  The graph of this function has the same period of
 The graph of this function has the same period of  is twice streched and translated
 is twice streched and translated  units to the right and 2 units up graph of the parent function (see diagram).
 units to the right and 2 units up graph of the parent function (see diagram). 
 
        
                    
             
        
        
        
Answer:
126
Step-by-step explanation:
(−3/10)(4.2)(−100)
=4.2
=
=30 times 4.2 = 126