This is a linear function. Let diameter (inches) be x, circumference (inches) be y, observe that the value of y/x is always 3.14. For example, 15.7/5=31.4/10=...=3.14. Therefore, this is not only a function (one to one correspondence from x to y), it's also a linear function that can be represented as y=3.14x. 
        
             
        
        
        
Answer: = 
 
Step-by-step explanation:



 
        
             
        
        
        
The formula of the future value of annuity due is
Fv=pmt [(1+r/k)^(kn)-1)÷(r/k)]×(1+r/k) 
Fv future value 1250675 
PMT semiannual payment? 
R interest rate 0.045 
K compounded semiannual 2 
N time 30 years 
Solve the formula for PMT 
PMT=Fv÷ [(1+r/k)^(kn)-1)÷(r/k)]×(1+r/k) Plug in the formula 
PMT=1,250,675÷((((1+0.045
÷2)^(2×30)−1)÷(0.045÷2))×(1+0.045÷2))
=9,828.44...Answer
Hope it helps!
        
                    
             
        
        
        
Answer:
90
Step-by-step explanation:
both sides are equal 
both sides have to match
therefore y is 90 and x is 30
it is a symmetry thing