Can someone please help me with number 9?!

Use the radius you found in part i (r=26.8 cm) with the surface area formula below to find the surface area of the sphere. show your work and round your answer to the nearest tenth. the surface area of a sphere: sa = 4πr^2 self note: 3.8.4

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol