If x increases by 7 in each row of a table of values, and the first differences are all equal to 45.5, then the rate of change is: a) 7/455

b) 6.5

c) 455/7

d) 318.5

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.)