Consider a circle whose size can vary. Let r represent the radius of the circle (in cm) and let C represent the circumference of the circle (in cm). Suppose the function f determines the circumference of the circle in cm, C , given its radius length in cm, r .
Write a function formula for f .
What does f ( 15 ) represent in this context? Select all that apply.
A circle with a radius of 15 cm.
The circumference (in cm) of a circle whose radius is 15 cm.
A circle with a circumference of 15 cm.
The radius (in cm) of a circle whose circumference is 15 cm.
If f ( a ) = 15 , what does a represent in this context? Select all that apply.
The radius (in cm) of a circle whose circumference is 15 cm.
A circle with a circumference of 15 cm. A circle with a radius of 15 cm.
The circumference (in cm) of a circle whose radius is 15 cm.
What values can r assume in this context? Express your answer as an interval.
What values can f ( r ) assume in this context? Express your answer as an interval.
Suppose g(x)=√x−4x/x-11.
What is the range of g?