Gelp asapselect the correct answer.
jack knows the surface area of a cylinder and its radius. he wants to find the cylinder's height. he needs to rewrite the formula a
to find the cylinder's height (h) in terms of the cylinder's surface area (a) and its radius (1). which is the correct formula?
o a r = r + 24/1
b. h=24
oc. h= 4-2
od. h = 4 9

D) h = A/2πr - r

Step-by-step explanation:

A = 2πr(r+h)

A = 2πr² + 2πrh

2πrh = A - 2πr²

     h = (A-2πr²)/2πr

         =A/2πr - 2πr²/2πr

         =A/2πr - r

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

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x