First of all, you need to attach images for this one. Second of all, graph it in desmos and compare. Thirdly, whichever looks like this.
Answer:
radius
Step-by-step explanation:
i believe it is radius because in my point of view it looks like the line travels up to the half of the circle.
Answer:
24
Step-by-step explanation:
x=4
f(6*x) becomes f(6*4)
f(6*4)=24