Answer:
160 not interested and 144*
Step-by-step explanation:
* is the degree sign like the little o
 
        
             
        
        
        
Answer:
$ 50,340.97
Step-by-step explanation:
From the above question, we can deduce that we are to find the Initial amount invested which is also called the Principal.
The formula to find Principal in a compound interest question is:
P = A / (1 + r/n)^nt
Where:
A = Total Amount obtained after invested = $80,000
r = Interest rate = 3.1% = 0.031
n = number of times interest in compounded = Quarterly = 4 
t = time in years = 15
P = $80,000/(1 + 0.031/4)^4 × 15
P = $80,000/(1 +0.00775)^60
P = $ 50,340.97
Hence, James would have to invest $50,340.97 today to have $80,000 in 15 years. 
 
        
             
        
        
        
Answer:

Step-by-step explanation:
Circumference is the perimeter of a circle. It can be found using the formula: 

However, we are given the radius. 
- The radius measures from the center to the edge of the circle. 
- The diameter measures from edge to edge through the center. 
- So, the diameter is twice the radius, or d=2r 
The formula can be rewritten as: 

We know the circumference is 25.12 inches.

Let's round pi to 3.14 

We want to solve for the radius, so we must isolate it. 
Divide both sides by 3.14 because the inverse of multiplication is division. 


Divide both sides by 2. 


The radius of the disc is <u>4 inches.</u>
 
        
             
        
        
        
Draw anything and colour the whole thing in.