Answer:
   140
Step-by-step explanation:
Let the number be represented by x. You are given ...
   (3/5)x = 42
Multiplying by 10/3 gives ...
   (10/3)(3/5)x = (10/3)(42)
   2x = 140 . . . . the value of twice the number
 
        
                    
             
        
        
        
The applicable formula is
  A = P(r/12)/(1 -(1+r/12)^(-12n))
where P is the principal amount,
r is the annual interest rate (compounded monthly), and 
n is the number of years.
Using the formula, we find
  A = 84,400*(0.04884/12)/(1 -(1+0.04884/12)^(-12*15))
  = 84,400*0.00407/(1 -1.00407^-180)
  = 343.508/0.518627
  ≈ 662.34
The monthly payment on a mortgage of $84,400 for 15 years at 4.884% will be
  $662.34
        
             
        
        
        
We cannot see the triangle
        
                    
             
        
        
        
Answer:
Slope= -0.5
Step-by-step explanation: