Direct variation equation that relates the two variables. Then solve. suppose y varies directly as x and y =21 when x =3​

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

Find the zeros of each function. f(x) = x^2 + 5x - 6

Need plz been trying to do it for a long time and still haven’t succeeded