ok so first we would do the function d(x) = 3(8)+2
which when solved turns out to be 26 
we would then do the function h(x) = 2(26) +7
which when solved turns out to be 59
so he would need 59 dollars for the donuts 
 
        
             
        
        
        
Answer:
x=-2
Step-by-step explanation:
add 5x , then subtract 45, then divide by 15
 
        
                    
             
        
        
        
> and>
Step-by-step explanation:
 
        
                    
             
        
        
        
Take the root of both sides, and then solve. 
c = sqrt a^2 + b^2, - sqrt a^2 + b^2.
 
        
        
        
I think it is D, too. Did you submit the test yet?