For each sequence, determine whether its arithmetic , geometric or neither. write an explicit or recursive formula for each sequence . you must show your work toearn credit for each problem. 1, 3, 6, 10, 15 4, 13/3, 14/3, 5 16/3

Asix-sided die of unknown bias is rolled 20 times, and the number 3 comes up 6 times. in the next three rounds (the die is rolled 20 times in each round), the number 3 comes up 6 times, 5 times, and 7 times. the experimental probability of rolling a 3 is 10 %, which is approximately % more than its theoretical probability. (round off your answers to the nearest integer.)