Answer:
(3x+5y)/8
Step-by-step explanation:
The total amount is 150+250=400 
We then do (3x+5y)/2 × 1/400
This equals (3x+5y)/800
We multiply that  by 100 giving us the final answer.
 
        
             
        
        
        
Answer:
97
Step-by-step explanation:
For this equation we have to plug in, so z= 6 and w=7. the question is 8z+7w
so plug in 6 for z and 7 for w. 8(6)+7(7) so 8*6 is 48 and 7*7= 49. 48+49= 97
hope this helps :)
 
        
             
        
        
        
Answer:
145
Step-by-step explanation:
85+60
 
        
             
        
        
        
The function shown is f(x)= -1/2 cos(x). 
sin(x) makes the line way more “curverier” So both sin(x) functions are out. It is NOT 1/2 cos(x) because it would make the y-intercept 0, not .5 In the picture it’s starting at .5 so it’s f(x)=-1/2 cos(x)