A grab bag contains 7 football cards and 3 basketball cards An experiment consists of taking one card out of the bag then selecting another card What is the probability of selecting a football card and then a basketball card if a the first card is not replaced b the first card is replaced Express your answers in decimal form If necessary round answers to the nearest hundredth a 0 23 b 0 21 a 0 09 b 0 49 a 0 21 b 0 23 a 0 49 b 0 09