Consider a circle whose size can vary. let r r represent the radius of the circle (in cm) and let c c represent the circumference of the circle (in cm). suppose the function f f determines the circumference of the circle in cm, c c, given its radius length in cm, r r. write a function formula for f f.

  f(r) = 2πr

Step-by-step explanation:

You know the formula for circumference in terms of radius is ...

  C = 2πr

You are being asked to write this as a function named "f". That will be ...

  f(r) = 2πr

Step-by-step explanation:

The formula for circumference of a circle is

where,

C represent the circumference of the circle.

r represent the radius of the circle.

It is the function f  determines the circumference of the circle in cm, C C, given its radius length in cm, r.

So, the circumference of the circle is defined by the function

Therefore the required formula for function f is .

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

the answer is 48m^2!

step-by-step explanation: