Answer:



Step-by-step explanation:
Given


 maximum
 maximum
 minimum
 minimum
Required
Solve graphically
First, we need to determine the inequalities of the system.
For number of coins, we have:
 because the number of coins is not less than 20
 because the number of coins is not less than 20
For the worth of coins, we have:
 because the worth of coins is not more than 0.80
 because the worth of coins is not more than 0.80
So, we have the following equations:


Make y the subject in both cases:


Divide through by 0.01



The resulting inequalities are:


The two inequalities are plotted on the graph as shown in the attachment.
 --- Blue
 --- Blue
 --- Green
 --- Green
Point A on the attachment are possible solutions
At A:

 
        
             
        
        
        
Answer:
Step-by-step explanation:
$2800 - $750 = $2050
$2050 - $500 = $1550
$750 rent
$500 vacation savings
$1500 spending money
 
        
                    
             
        
        
        
Answer:
5x^2 + 13x
Step-by-step explanation:
 
        
             
        
        
        
Hello : 
<span>f(x)=x²+4x-5
</span><span>The axis of symmetry for a function in the form f(x)=x^2+4x-5 is x=-2 :
</span>f(x) = (x+2)² + b 
f(x) x²+4x+4+b=  x² +4x-5 
 4+b= -5 
b = -9
the vertex is : (2 , -9)
        
                    
             
        
        
        
I did (450*3/4=337.5) to get how much each person would eat, then I did (337.5*14=4725g) to see how big the turkey should be. I then converted grams to kilos (4725*0.001=4.725 kg), and I got how big the turkey would be. It turns out the appropriate size of the turkey would be medium, so then what I did was that I looked for the medium price of the turkey per kg, and found that it was £5.99 per kg. I did (4.725*5.99) and I got about £28.30.
It would cost £28.30 for 14 people.