She would have to study about 48 hours to get a score of 97. 
Hopefully that helped! :) 
        
             
        
        
        
Answer:
Total number of dimes=6
Total number of nickels=12
Step-by-step explanation:
The expression for the total value of money Jayden has is;
Nickels have a value of= $0.05
Dimes have a value of= $0.10
Total value=(value of nickels×number of nickels)+(value of dimes×number of dimes)
where;
Total value=$1.20
Value of a nickel=$0.05
number of nickels=y, but y=2 x
Value of a dime=0.10
number of dimes=x
replacing;
1.20=(0.05×2 x)+(0.1×x)
0.1 x+0.1 x=1.2
0.2 x=1.2
x=1.2/0.2
x=6
y=2 x=2×6=12
Total number of dimes=6
Total number of nickels=12
 
        
             
        
        
        
I think that this an example of a paired t test. Since each student (subject) is given 2 treatments of the same material. 
        
             
        
        
        
Assuming you are trying to get price per pound.
Divide 750 by 5 which equal 150 or $1.50
        
             
        
        
        
Answer:
You are correct it is c
Step-by-step explanation: