To find a percentage of a number, convert the percent to a decimal, then multiply the number by it. In this case, 16% = 0.16.
N * 0.16 = 17
N = 106.25
(thanks to Vanessa033 for catching my mistake; I owe you one)
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
The worth of a penny is 1 cent = 1/100 = $0.01 
The worth of a nickel is 5 cents = 5/100 = $0.05
Let x represent the number of pennies that she could have. Lucy has some pennies and some nickels. She has a maximum of 15 coins. If lucky has 6.999999999999999, it means that 
6.999999999999999 + x ≥ 15
x ≥ 15 - 6.999999999999999
x ≥ 8
If the 15 coins worth a minimum of $0.47combined, it means that 
0.05(6.999999999999999) + 0.01x ≤ 0.47
0.35 + 0.01x ≤ 0.47
0.01x ≤ 0.47 - 0.35
0.01x ≤ 0.12
x ≤ 0.12/0.01
x ≤ 12
Therefore, the possible values for the number of pennies that she could have is 8 ≤ x ≤ 12
 
        
             
        
        
        
What the person said up above should be correct!
        
             
        
        
        
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