qq 7
Step-by-step explanation:
you have to take the hole numer and dive it by the % and if get a decimod round down
 
        
                    
             
        
        
        
Step-by-step 
=> 900=-100x+300
=> -100x+300=900
=> -100x=900–300
=> -100x=600 divide both side by -100
=> x=-6
 
        
                    
             
        
        
        
Refer to the attached for step by step explaination.
Have a nice day...
 
        
             
        
        
        
Use the formula S=P-PD
S is sale price, original price is P, and PD is discounted percent,
276.25=P-P(.65), I turned the percent into a decimal.
276.25=P(1-.65)
276.25=P(1-.65)
276.25=P(.35)
Now cross multiply.

Hope this helps, now you know the answer and how to do it. Stay healthy and safe and HAVE A BLESSED AND WONDERFUL DAY! :-)  
- Cutiepatutie ☺❀❤
 
        
             
        
        
        
<4= 150
<6=150
because the angels are parallel <4 & <2 are the exact same measurements and because 6 is perpendicular to  <4 & <2 thus making it also 150 degrees