A mysterious card-playing squirrel offers you the opportunity to join in his game. The rules are: To play you must pay him $16. If you pick a spade from a shuffled pack, you win $43. Find the expected value you win (or lose) per game. please help me

Evaluate the following expression 1/3^2

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

Find the pattern and use it to list the nth term in the sequence. 6, 12, 20, 30, 42, 56, the nth term of the sequence is