150 + 20x, where x is the number of cellphones sold
        
             
        
        
        
1.) 2000 2.) 680000 3.) .0000007 4.) .00135 5.) 3062000 6.) 7x10^5 7.) 3.2x10^7 8.)4.5x10^-2 9.)3.46781x10^-5 10.) 1.3x10^18
        
                    
             
        
        
        
 
Step 2: She did not simplify under the square root correctly
 
under the square root:
(-6)^2 =36 
and -4(5)(-8) =160
therefore under the square root it needs to be square root of 36+160 which is square root of 196. 
That answer is 14 when square rooted
 
        
                    
             
        
        
        
Answer:
D
Step-by-step explanation:
27/12= 2.25
2.25*16=36
 
        
             
        
        
        
Answer:
190.1, 101.89, 101.9, 100.789, 112, 1 
Step-by-step explanation: