Answer:
4
Step-by-step explanation:
 
        
             
        
        
        
Answer:
5x + 1
Step-by-step explanation:
 
        
             
        
        
        
Vcyl = Vcone
pi×x^2×y = 1/3×pi×(3x)^2 (h)
pi's cancel--> x^2•y = 3x^2 (h)
h = y/3
        
             
        
        
        
Answer:
-15
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
 - Parenthesis
 - Exponents
 - Multiplication
 - Division
 - Addition
 - Subtraction
 
Step-by-step explanation:
<u>Step 1: Define</u>
(4x + 2)(x - 5) / 2
x = 2
<u>Step 2: Evaluate</u>
- Substitute:                             (4 · 2 + 2)(2 - 5) / 2
 - Parenthesis - Multiply:          (8 + 2)(2 - 5) / 2
 - Parenthesis - Add:                10(2 - 5) / 2
 - Parenthesis - Subtract:         10(-3) / 2
 - Multiply:                                 -30 / 2
 - Divide:                                    -15
 
 
        
                    
             
        
        
        
Exponential growth is 
F=P(1+r)^t
F=future amount
P=present amount
r=rate
t=time in years
rate=2%=0.02
therefor the equation is 
f(x)=23,000(1+0.02)^x
f(x)=23,000(1.02)^x
where x=time in years from 2012