How to convert rectangular to polar?
x²=y(8-y)

The Polar form  is  r = 8sin θ

Step-by-step explanation:

Explanation:-

Polar co-ordinates

              x = r cos θ    and      

               y=r sin θ      

now      

               tan θ =

Now given equation x²=y(8-y)

                                    ...(i)

now The equation(i)  convert to polar

                                      r² = 8(r sin θ)

                                      r = 8sin θ

Conclusion:-

The Polar form is  r = 8sin θ

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk