The local park has 4 bike racks. each rack can hold 15 bikes. there are 16 bikes in the bike racks. which expression shows the total number of empty spaces in the bike racks? (15x16) + 4 (15x16) - 4 (4x15) + 16 (15x4) - 16

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a diamond or heart. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability of randomly selecting a diamond or heart or club. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability of randomly selecting queen or club. (type an integer or a decimal rounded to three decimal places as needed.)