Answer:
Step-by-step explanation:
The funtion is:
C(p)= 3(p)+1.07 (1) 
where: 3 is the package cost, p is the number of packages and 1.07 is the taxes
the cost could be equal or less than the gift card value so:
C (2)
 (2)
Replace 2 en 1 
 x 1.07
 x 1.07
3(p) 
 
![3p [tex]\leq](https://tex.z-dn.net/?f=3p%20%5Btex%5D%5Cleq) 14.02\\\\p\leq \frac{14.02}{3} \\\\p\leq 4.67[/tex]
14.02\\\\p\leq \frac{14.02}{3} \\\\p\leq 4.67[/tex]
It´s important to aprox the quantity to the minimum value so I can buy 4 packages
The reasonable domain is for all R because any number is a possible value of the independent variable
 
        
             
        
        
        
Answer:
25 friends
Step-by-step explanation:
85 - 10 = 75 
75/3 = 25 
Answer check:
25*3 = 75
75 + 10 = 85
DeShawn has 25 friends. (Wow, DeShawn must be popular) 
 
        
             
        
        
        
Answer:
The complete list of factors for 805 are 1, 5, 7, 23, 35, 115, 161, and 805.
Step-by-step explanation:
A factor pair is a combination of two factors which can be multiplied together to equal 805. In proper math terms, the number 805 is called the product and the two numbers that can be multiplied together to equal it are called the factors.
In order to work out the factor pairs of 805 we need to first get all of the factors of 805. Once you have the list of all those factors we can pair them together to list out all of the factor pairs.
The complete list of factors for 805 are 1, 5, 7, 23, 35, 115, 161, and 805.
 
        
             
        
        
        
Answer:
 5 
Step-by-step explanation:
15 ×  = 5
 = 5