Which is more valuable $20000 received now or $5000 per year for 4 years?

What ia the sum if the first 7 terms of the geometric series

Agame has a rectangular board with an area of 44 in2. there is a square hole near the top of the game board in which you must not toss in a bean bag. the square has side lengths of 3 in. what is the probability of not tossing the bag through the hole? a)9/44 b)3/9 c)3/44 d)35/44

Enter the amplitude of the function. f(x)=3cosx