Answer:

Step-by-step explanation:




i believe it’s D because where you have 20 marked it’s 20 more from where you are which would be around 40 which is why i’m saying D
The last one because for every functoin pair their is exactly one output value fo the function pair.
Answer:
The circumference is approximately 125.66.
Step-by-step explanation:
The formula for circumference is 2 x 3.14(r). Radius (or r) in this case is equal to 20 since the diameter is two times the length of the radius. 40/2 = 20.
2 x 3.14(20) ≈ 125.66