Answer:
Step-by-step explanation:
An exponential function is of the form

where a is the initial value and b is the growth/decay rate.  Our initial value is 64.  That's easy to plug in.  It goes in for a.  So the first choice is out.  Considering b now...
If the rate is decreasing at .5% per week, this means it still retains a rate of 
100% - .5% = 99.5%
which is .995 in decimal form.
b is a rate of decay when it is greater than 0 but less than 1; b is a growth rate when it is greater than 1.   .995 is less than 1 so it is a rate of decay.  The exponential function is, in terms of t,

 
        
             
        
        
        
There are many for this ,but one sample is: 2 divided by 2is 4 X 3 which is 12.
        
             
        
        
        
Answer:
x=57
Step-by-step explanation:
63+60= 123
A triangle is 180 degrees
180-123= 57
x=57
 
        
                    
             
        
        
        
9514 1404 393
Answer:
   $8,775
Step-by-step explanation:
The amount due is given by the formula ...
   A = P(1 +rt)
where P is the principal amount, r is the annual rate, and t is the number of years.
   A = $6,500(1 +0.07×5) = $6,500(1.35) = $8,775
Montrey had to pay back $8,775.
 
        
             
        
        
        
The 'x' coordinate of the midpoint is the average of the 'x'