The definition of a circle uses the undefined term arc line plane ray

plain

Step-by-step explanation:

im pretty sure its plane

Step-by-step explanation:

now don't quote me on this but im sure its plane because, the three undefined terms are line, plane and ray. If I remember correctly, a circle using one of these undefined terms is a plane.

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

f(x)=2/3x-8, which give g(x) the greatest value.

step-by-step explanation: