Answer:
D  -9
Step-by-step explanation:
(g o f)(-1) = g(f(-1))
f(-1) = 
g(-4) = -4 - 5 = -9
So, (g o f)(-1) = -9
 
        
             
        
        
        
Answer:
Slope = undefined.
Step-by-step explanation:
A vertical line always has an undefined slope.
 
        
             
        
        
        
Answer:
A = 26 ft²
Step-by-step explanation:
To find the area of a circle, use the formula A = πr²
We know π = 3.14 and C = 18.
Use the circumference to find "r". C = 2πr
C = 2πr
18 = 2(3.14)r
18 = 6.28r
r = 18/6.28         Exact answer
r ≈ 2.866           Rounded to three decimal places
You can use either of the two bolded "r" values. I will use the rounded answer in the formula for area.
Substitute π = 3.14 and r = 2.866.
A = πr²
A = (3.14)(2.866)²                  Solve exponents first
A = 3.14(8.213956)                Multiply
A = 25.7918218...                  Unrounded answer
A ≈ 26                                   Rounded to nearest square foot
Add the units back in.
<h3>A = 26 ft²</h3>