Answer:
243
Step-by-step explanation:
hope this helps!! god bless!! -Natalia
 
        
             
        
        
        
Answer:
-4 and 3
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Factors are (x-9)(x+4)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
The answer is Tonya's phone had the greater initial trade-in value. 
Leo's phone decreases at an average rate slower than the trade in value of Tonya's phone.
Step-by-step explanation:
Given
Tonya

Leo




Solving (a): The phone with greater initial value
The initial value is when x = 0. So, we have:




From Leo's table

By comparison;

i.e.

<em>So: Tonya's had the greater initial trade-in value</em>
Solving (b): The phone with lesser rate
An exponential function is:

Where:

For Tonya

For Leo, we have:


So, the equation becomes:

 and
 and 
Solving  , we have:
, we have:



 becomes
 becomes

Divide both sides by 480

Take square roots

 -- Leo's rate
 -- Leo's rate
By comparison; Leo's rate is slower i.e. 0.87 < 0.88
 
        
             
        
        
        
Answer:
ans: The line passes through the point (0,13)
Step-by-step explanation:
(0,13) is Y-intercept