The surface area of a sphere depends on its radius, so the area is a function of the radius. If this function is called A(r), use the formula below to compute
A(5), the area of a sphere with a radius of 5 units.
A(r) = 4pier²

With #! i’ve tried to figure it out but i can’t.

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

Construct the graph that models the given situation