I believe its letter b. how far from zero because it would determine negative and positive numbers! so wait till an other answer and maybe you will get letter b as the answer hope i helped! <span />
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
x is the score she got on the fifth test.
Since her average score is 88, the sum of all five tests is 5×88. 
 x + 87 + 75 + 93 + 85 = 5×88 = 440
x = 440 -  87 - 75 - 93 - 85
x = 100
She got a 100 on her fifth test.
 
        
             
        
        
        
Hi
Answer in photo
NOTE: I'm not sure the answer may not be true
Good Luck
#Turkey
 
        
                    
             
        
        
        
The answers are as follows. 
a. 9x
In order to get this, you need to reevaluate 64 as a base of 4. Since 64 is equal to 4^3, we can rewrite the right side as 
64^3x = (4^3)^3x = 4^9x
Which gives you the first answer. 
b. 10
Similar to the first problem, we need to express 16 as a base of 2. 2^4 is equal to 16, so we use that in it's place and simplify. 
16^5/2 = (2^4)^5/2 = 2^20/2 = 2^10
c. Sqrt(7.31)
This one is more simple. Raising something to a 1/2 power (.5) is the same as taking the square root. 
 
        
             
        
        
        
Answer:
A
Step-by-step explanation:
5/4*4/13=20/182=10/91   you take the red marble out so you -1 from the red and the total bag of marbles then you multiply them to gather to get the combined average  then simplify