You buy a container of cat liter for $11.50 and a bag of cat food for x dollars. the total price is $16.80 which includes 5% sales tax. write an equation to find the cost of the cat food.

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.)