Answer:
There were 20 questions on the quiz 
Step-by-step explanation:
In this question, we are concerned with knowing the number of questions on a quiz, given that Deana had a certain percentage after scoring an amount of marks.
We proceed as follows;
Let the number of questions on the quiz be X. 
Now, she got 85% by making 3 incorrect choices. This means the percentage of questions she got incorrectly would be 100-85 = 15%
what we are saying is that it is just 15% of her questions that were wrong. 
This mathematically;
15% of x = 3
15/100 * x = 3
15x = 3 * 100
15x = 300
x = 300/15
x = 20
 
        
             
        
        
        
Step-by-step explanation:
1 2 3 4 5
wa
 
        
             
        
        
        
Answer: c
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
The gcf of 3 and 7 is 1.
Step-by-step explanation: