Move over the # of decimal places as the negative exponent. 0.0907 is the correct answer! 
Hope this helps, and please mark brainliest!
        
                    
             
        
        
        
Answer: 518
Step-by-step explanation:
 
        
             
        
        
        
 To get the answer do this: 
2.5% of what is 2.21
2.5%x = 2.21
2.5/100x = 2.21
0.025x = 2.21
divide both sides by 0.025
0.025x/0.025 = 2.21/0.025
x = 88.4
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It should be range your welcome
        
                    
             
        
        
        
Answer:
2,29
Step-by-step explanation:
17,56 = 29,01 - 5x
5x = 29,01 - 17,56
5x = 11,45|:5
x = 2,29