Your correct it’s the first one
        
             
        
        
        
Answer:
B
Step-by-step explanation:
Add the monthly fee $15 and the amount of times he called.
$15 + 0.05C = M
Hoped it helped you
 
        
             
        
        
        
Answer:
Step-by-step explanation:
BC=AD
3x-1=x+5
3x-x=5+1
2x=6
x=3
BC=3×3-1=8
CD=2x=2×3=6
perimeter=2(8+6)=2(14)=28 
 
        
             
        
        
        
1. A quadratic equation has the following form: ax²+bx+c.
 
 2. The leading coefficient is the number that is attached to the variable with the highest exponent. Then, the "a" is the leading coefficient of the quadratic equation.
 
 3. The problem says that the leading coefficient is 1 (a=1) and the roots of the quadratic equation are 5 and -3. Then, you have:
 
 (x-5)(x+3)=0
 
 4. When you apply the distributive property, you obtain:
 
 x²+3x-5x-15=0
 x²-2x-15=0
 
 5. Therefore, the answer is:
 
 x²-2x-15=0
        
             
        
        
        
Answer:
a
12=
−
3
n
2
−
n
Step-by-step explanation: