It is the first one, the second one, and the fourth one.
Hope this helps ;)
 
        
                    
             
        
        
        
Answer:
Independent variable = number of bub (b)
Dependent variable = total cost (c)
Equation: c = $1.25b + $10
Timothy would spend: $20
Step-by-step explanation:
Total cost = c
Number of bub = b
✔️Total cost, c, is dependent on the number of bub, b.
Therefore:
Independent variable = number of bub (b)
Dependent variable = total cost (c)
✔️Equation that describes this situation can be written as:
c = $1.25b + $10
✔️If Timorhy buys 8 bubs, he would spend the following:
Substitute b = 8 into c = $1.25b + $10, and solve for c.
c = $1.25(8) + $10
c = $10 + $10
c = $20
 
        
             
        
        
        
The answer is 2 I believe
        
             
        
        
        
Answer:
A=45m^2
Step-by-step explanation:
l*w
 
        
             
        
        
        
Answer:
y=9
Step-by-step explanation:
Slope: 9-9/-2-15=0
Therefore, y=0x+b 
Plug values in: 9=0(-2)+b
0+b=9
b=9
Therefore, equation is y=9