Answer:
your worse nightmare MATH
Step-by-step explanation:
 
        
             
        
        
        
Using the rational root theorem, it is found that your friend is correct.
<h3>What is the rational root theorem?</h3>
- It is a theorem that states that for a polynomial with integer coefficients, with q being the factors of the leading coefficient and p being the factors of the constant, every <u>possible rational root</u> is the format  . .
In this problem:
- The leading coefficient is 1, hence it's only factor is  , thus guaranteeing that every possible rational zero is an integer, which means that your friend is correct. , thus guaranteeing that every possible rational zero is an integer, which means that your friend is correct.
To learn more about the rational root theorem, you can take a look at brainly.com/question/10937559
 
        
             
        
        
        
<h2>♪Answer : </h2>
»f(x) = 9(9 + x)(10)
subtitute x = 2 for f(x). 
»f(5) = 9(9 + 5)(10)
»f(5) = 9(14)(10) 
»f(5) = 1,260✅
 
        
        
        
It’s the second option 
sin(45)=13/x
        
             
        
        
        
When you multiply it is just 5*23=115
115*2= 230